21010122013012 has 24 divisors (see below), whose sum is σ = 40134977199072. Its totient is φ = 9544163968800.

The previous prime is 21010122012983. The next prime is 21010122013171. The reversal of 21010122013012 is 21031022101012.

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, 147215158 + ... + 147357805.

It is an arithmetic number, because the mean of its divisors is an integer number (1672290716628).

Almost surely, 2^{21010122013012} is an apocalyptic number.

21010122013012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21010122013012 is a deficient number, since it is larger than the sum of its proper divisors (19124855186060).

21010122013012 is a wasteful number, since it uses less digits than its factorization.

21010122013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294574599 (or 294574597 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21010122013012 its reverse (21031022101012), we get a palindrome (42041144114024).

The spelling of 21010122013012 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, thirteen thousand, twelve".