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10222122220 = 2251013504547
BaseRepresentation
bin10011000010100100…
…10011010011101100
3222101101201121112021
421201102103103230
5131413330402340
64410155315524
7511212414412
oct114122232354
928341647467
1010222122220
1143761377a2
121b9344bba4
13c6ba1bb3b
146cd8632b2
153ec636e4a
hex2614934ec

10222122220 has 24 divisors (see below), whose sum is σ = 21487690224. Its totient is φ = 4084804416.

The previous prime is 10222122181. The next prime is 10222122223. The reversal of 10222122220 is 2222122201.

It is a junction number, because it is equal to n+sod(n) for n = 10222122194 and 10222122203.

It is not an unprimeable number, because it can be changed into a prime (10222122223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232014 + ... + 272533.

It is an arithmetic number, because the mean of its divisors is an integer number (895320426).

Almost surely, 210222122220 is an apocalyptic number.

10222122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10222122220 is an abundant number, since it is smaller than the sum of its proper divisors (11265568004).

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

10222122220 is a wasteful number, since it uses less digits than its factorization.

10222122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505569 (or 505567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10222122220 its reverse (2222122201), we get a palindrome (12444244421).

The spelling of 10222122220 in words is "ten billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1013 2026 4052 5065 10130 20260 504547 1009094 2018188 2522735 5045470 10090940 511106111 1022212222 2044424444 2555530555 5111061110 10222122220