21111200110112 has 48 divisors (see below), whose sum is σ = 47543659353792. Its totient is φ = 9039379265280.

The previous prime is 21111200110109. The next prime is 21111200110141. The reversal of 21111200110112 is 21101100211112.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 42868814 + ... + 43358477.

It is an arithmetic number, because the mean of its divisors is an integer number (990492903204).

Almost surely, 2^{21111200110112} is an apocalyptic number.

It is an amenable number.

21111200110112 is an abundant number, since it is smaller than the sum of its proper divisors (26432459243680).

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

21111200110112 is a wasteful number, since it uses less digits than its factorization.

21111200110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86228401 (or 86228393 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21111200110112 its reverse (21101100211112), we get a palindrome (42212300321224).

The spelling of 21111200110112 in words is "twenty-one trillion, one hundred eleven billion, two hundred million, one hundred ten thousand, one hundred twelve".