21010122000212 has 12 divisors (see below), whose sum is σ = 38702856316320. Its totient is φ = 9952163052696.

The previous prime is 21010122000169. The next prime is 21010122000223. The reversal of 21010122000212 is 21200022101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138224486768 + ... + 138224486919.

It is an arithmetic number, because the mean of its divisors is an integer number (3225238026360).

Almost surely, 2^{21010122000212} is an apocalyptic number.

It is an amenable number.

21010122000212 is a deficient number, since it is larger than the sum of its proper divisors (17692734316108).

21010122000212 is a wasteful number, since it uses less digits than its factorization.

21010122000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276448973710 (or 276448973708 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21010122000212 its reverse (21200022101012), we get a palindrome (42210144101224).

The spelling of 21010122000212 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, two hundred twelve", and thus it is an aban number.