22131210302021 has 4 divisors (see below), whose sum is σ = 22132625085312. Its totient is φ = 22129795518732.

The previous prime is 22131210301999. The next prime is 22131210302053. The reversal of 22131210302021 is 12020301213122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22131210302021 - 2¹⁴ = 22131210285637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22131210301984 and 22131210302002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131210302081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707368181 + ... + 707399466.

It is an arithmetic number, because the mean of its divisors is an integer number (5533156271328).

Almost surely, 2^{22131210302021} is an apocalyptic number.

It is an amenable number.

22131210302021 is a deficient number, since it is larger than the sum of its proper divisors (1414783291).

22131210302021 is a wasteful number, since it uses less digits than its factorization.

22131210302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414783290.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 22131210302021 its reverse (12020301213122), we get a palindrome (34151511515143).

The spelling of 22131210302021 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred ten million, three hundred two thousand, twenty-one".