21120110120112 has 40 divisors (see below), whose sum is σ = 54842980275504. Its totient is φ = 7003559829504.

The previous prime is 21120110120069. The next prime is 21120110120141. The reversal of 21120110120112 is 21102101102112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21120110120091 and 21120110120100.

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, 1139893053 + ... + 1139911580.

Almost surely, 2^{21120110120112} is an apocalyptic number.

It is an amenable number.

21120110120112 is an abundant number, since it is smaller than the sum of its proper divisors (33722870155392).

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

21120110120112 is a wasteful number, since it uses less digits than its factorization.

21120110120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279804837 (or 2279804831 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21120110120112 its reverse (21102101102112), we get a palindrome (42222211222224).

The spelling of 21120110120112 in words is "twenty-one trillion, one hundred twenty billion, one hundred ten million, one hundred twenty thousand, one hundred twelve".