21112002010012 has 24 divisors (see below), whose sum is σ = 37175473608336. Its totient is φ = 10490447904768.

The previous prime is 21112002009913. The next prime is 21112002010069. The reversal of 21112002010012 is 21001020021112.

It is a junction number, because it is equal to n+sod(n) for n = 21112002009974 and 21112002010001.

It is a congruent number.

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, 7463958 + ... + 9896194.

It is an arithmetic number, because the mean of its divisors is an integer number (1548978067014).

Almost surely, 2^{21112002010012} is an apocalyptic number.

It is an amenable number.

21112002010012 is a deficient number, since it is larger than the sum of its proper divisors (16063471598324).

21112002010012 is a wasteful number, since it uses less digits than its factorization.

21112002010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445717 (or 2445715 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21112002010012 its reverse (21001020021112), we get a palindrome (42113022031124).

The spelling of 21112002010012 in words is "twenty-one trillion, one hundred twelve billion, two million, ten thousand, twelve".