21120611107112 has 64 divisors (see below), whose sum is σ = 44692359465600. Its totient is φ = 9268941024000.

The previous prime is 21120611107109. The next prime is 21120611107139. The reversal of 21120611107112 is 21170111602112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93982562 + ... + 94207022.

It is an arithmetic number, because the mean of its divisors is an integer number (698318116650).

Almost surely, 2^{21120611107112} is an apocalyptic number.

21120611107112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21120611107112 is an abundant number, since it is smaller than the sum of its proper divisors (23571748358488).

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

21120611107112 is a wasteful number, since it uses less digits than its factorization.

21120611107112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261378 (or 261374 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 26.

Adding to 21120611107112 its reverse (21170111602112), we get a palindrome (42290722709224).

The spelling of 21120611107112 in words is "twenty-one trillion, one hundred twenty billion, six hundred eleven million, one hundred seven thousand, one hundred twelve".