21100102103112 has 32 divisors (see below), whose sum is σ = 52758501734400. Its totient is φ = 7032267837504.

The previous prime is 21100102103089. The next prime is 21100102103137. The reversal of 21100102103112 is 21130120100112.

It is a junction number, because it is equal to n+sod(n) for n = 21100102103091 and 21100102103100.

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, 68563912 + ... + 68870967.

It is an arithmetic number, because the mean of its divisors is an integer number (1648703179200).

Almost surely, 2^{21100102103112} is an apocalyptic number.

It is an amenable number.

21100102103112 is an abundant number, since it is smaller than the sum of its proper divisors (31658399631288).

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

21100102103112 is a wasteful number, since it uses less digits than its factorization.

21100102103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137441285 (or 137441281 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21100102103112 its reverse (21130120100112), we get a palindrome (42230222203224).

The spelling of 21100102103112 in words is "twenty-one trillion, one hundred billion, one hundred two million, one hundred three thousand, one hundred twelve".