21102112000012 has 24 divisors (see below), whose sum is σ = 37717457803200. Its totient is φ = 10326668966016.

The previous prime is 21102111999989. The next prime is 21102112000093. The reversal of 21102112000012 is 21000021120112.

It is a super-2 number, since 2×21102112000012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21102111999956 and 21102112000001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121598212 + ... + 121771627.

It is an arithmetic number, because the mean of its divisors is an integer number (1571560741800).

Almost surely, 2^{21102112000012} is an apocalyptic number.

It is an amenable number.

21102112000012 is a deficient number, since it is larger than the sum of its proper divisors (16615345803188).

21102112000012 is a wasteful number, since it uses less digits than its factorization.

21102112000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243370305 (or 243370303 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21102112000012 its reverse (21000021120112), we get a palindrome (42102133120124).

The spelling of 21102112000012 in words is "twenty-one trillion, one hundred two billion, one hundred twelve million, twelve", and thus it is an aban number.