21210012011022 has 64 divisors (see below), whose sum is σ = 43973200373760. Its totient is φ = 6812157027200.

The previous prime is 21210012010939. The next prime is 21210012011047. The reversal of 21210012011022 is 22011021001212.

It is a junction number, because it is equal to n+sod(n) for n = 21210012010992 and 21210012011010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219355747 + ... + 219452417.

It is an arithmetic number, because the mean of its divisors is an integer number (687081255840).

Almost surely, 2^{21210012011022} is an apocalyptic number.

21210012011022 is an abundant number, since it is smaller than the sum of its proper divisors (22763188362738).

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

21210012011022 is a wasteful number, since it uses less digits than its factorization.

21210012011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99289.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21210012011022 its reverse (22011021001212), we get a palindrome (43221033012234).

The spelling of 21210012011022 in words is "twenty-one trillion, two hundred ten billion, twelve million, eleven thousand, twenty-two".