22201211100021 has 48 divisors (see below), whose sum is σ = 32876836728960. Its totient is φ = 13299675016320.

The previous prime is 22201211099941. The next prime is 22201211100049. The reversal of 22201211100021 is 12000111210222.

It is not a de Polignac number, because 22201211100021 - 2¹⁴ = 22201211083637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201211100821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4815985 + ... + 8221686.

It is an arithmetic number, because the mean of its divisors is an integer number (684934098520).

Almost surely, 2^{22201211100021} is an apocalyptic number.

It is an amenable number.

22201211100021 is a deficient number, since it is larger than the sum of its proper divisors (10675625628939).

22201211100021 is a wasteful number, since it uses less digits than its factorization.

22201211100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13037786 (or 13037763 counting only the distinct ones).

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

Adding to 22201211100021 its reverse (12000111210222), we get a palindrome (34201322310243).

The spelling of 22201211100021 in words is "twenty-two trillion, two hundred one billion, two hundred eleven million, one hundred thousand, twenty-one".