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10001222232 = 2333123835641
BaseRepresentation
bin10010101000001111…
…01000101001011000
3221211000001201201020
421110013220221120
5130440303102412
64332224522440
7502560662211
oct112407505130
927730051636
1010001222232
11427247a321
121b31480420
13c350278a1
146ac3a0408
153d805018c
hex2541e8a58

10001222232 has 64 divisors (see below), whose sum is σ = 25825013760. Its totient is φ = 3224275200.

The previous prime is 10001222207. The next prime is 10001222233. The reversal of 10001222232 is 23222210001.

It is a happy number.

It is a super-2 number, since 2×100012222322 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001222233) 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, 1770132 + ... + 1775772.

It is an arithmetic number, because the mean of its divisors is an integer number (403515840).

Almost surely, 210001222232 is an apocalyptic number.

10001222232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10001222232 is an abundant number, since it is smaller than the sum of its proper divisors (15823791528).

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

10001222232 is a wasteful number, since it uses less digits than its factorization.

10001222232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064 (or 8060 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 10001222232 its reverse (23222210001), we get a palindrome (33223432233).

The spelling of 10001222232 in words is "ten billion, one million, two hundred twenty-two thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 12 24 31 62 93 124 186 248 372 744 2383 4766 5641 7149 9532 11282 14298 16923 19064 22564 28596 33846 45128 57192 67692 73873 135384 147746 174871 221619 295492 349742 443238 524613 590984 699484 886476 1049226 1398968 1772952 2098452 4196904 13442503 26885006 40327509 53770012 80655018 107540024 161310036 322620072 416717593 833435186 1250152779 1666870372 2500305558 3333740744 5000611116 10001222232