22101221013021 has 64 divisors (see below), whose sum is σ = 33767839872000. Its totient is φ = 14279873287680.

The previous prime is 22101221012987. The next prime is 22101221013061. The reversal of 22101221013021 is 12031012210122.

It is not a de Polignac number, because 22101221013021 - 2²⁵ = 22101187458589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22101221012985 and 22101221013003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101221013061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132242491 + ... + 132409511.

It is an arithmetic number, because the mean of its divisors is an integer number (527622498000).

Almost surely, 2^{22101221013021} is an apocalyptic number.

It is an amenable number.

22101221013021 is a deficient number, since it is larger than the sum of its proper divisors (11666618858979).

22101221013021 is a wasteful number, since it uses less digits than its factorization.

22101221013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168211 (or 168205 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22101221013021 its reverse (12031012210122), we get a palindrome (34132233223143).

The spelling of 22101221013021 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-one million, thirteen thousand, twenty-one".