21010002112112 has 80 divisors (see below), whose sum is σ = 46246428684960. Its totient is φ = 9166456958976.

The previous prime is 21010002112081. The next prime is 21010002112129. The reversal of 21010002112112 is 21121120001012.

It is a congruent number.

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, 4010453 + ... + 7622580.

It is an arithmetic number, because the mean of its divisors is an integer number (578080358562).

Almost surely, 2^{21010002112112} is an apocalyptic number.

It is an amenable number.

21010002112112 is an abundant number, since it is smaller than the sum of its proper divisors (25236426572848).

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

21010002112112 is a wasteful number, since it uses less digits than its factorization.

21010002112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11633530 (or 11633524 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21010002112112 its reverse (21121120001012), we get a palindrome (42131122113124).

The spelling of 21010002112112 in words is "twenty-one trillion, ten billion, two million, one hundred twelve thousand, one hundred twelve".