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10222123220 = 2252382127067
BaseRepresentation
bin10011000010100100…
…10011100011010100
3222101101201122220022
421201102103203110
5131413330420340
64410155324312
7511212420341
oct114122234324
928341648808
1010222123220
114376138521
121b93450698
13c6ba1c42a
146cd8637c8
153ec6373b5
hex2614938d4

10222123220 has 48 divisors (see below), whose sum is σ = 22427895168. Its totient is φ = 3906165120.

The previous prime is 10222123211. The next prime is 10222123229. The reversal of 10222123220 is 2232122201.

It is an interprime number because it is at equal distance from previous prime (10222123211) and next prime (10222123229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222123229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364127 + ... + 391193.

It is an arithmetic number, because the mean of its divisors is an integer number (467247816).

Almost surely, 210222123220 is an apocalyptic number.

10222123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10222123220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11213947584).

10222123220 is an abundant number, since it is smaller than the sum of its proper divisors (12205771948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10222123220 is a wasteful number, since it uses less digits than its factorization.

10222123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27920 (or 27918 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 10222123220 its reverse (2232122201), we get a palindrome (12454245421).

The spelling of 10222123220 in words is "ten billion, two hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 821 1642 3284 4105 8210 16420 18883 27067 37766 54134 75532 94415 108268 135335 188830 270670 377660 541340 622541 1245082 2490164 3112705 6225410 12450820 22222007 44444014 88888028 111110035 222220070 444440140 511106161 1022212322 2044424644 2555530805 5111061610 10222123220