22321200031021 has 4 divisors (see below), whose sum is σ = 22321380407292. Its totient is φ = 22321019654752.

The previous prime is 22321200030973. The next prime is 22321200031177. The reversal of 22321200031021 is 12013000212322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5970135144996 + 16351064886025 = 2443386^2 + 4043645^2 .

It is a cyclic number.

It is not a de Polignac number, because 22321200031021 - 2²¹ = 22321197933869 is a prime.

It is a super-3 number, since 3×22321200031021³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22321200031021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321200031621) 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, 90002386 + ... + 90250051.

It is an arithmetic number, because the mean of its divisors is an integer number (5580345101823).

Almost surely, 2^{22321200031021} is an apocalyptic number.

It is an amenable number.

22321200031021 is a deficient number, since it is larger than the sum of its proper divisors (180376271).

22321200031021 is a wasteful number, since it uses less digits than its factorization.

22321200031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180376270.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22321200031021 its reverse (12013000212322), we get a palindrome (34334200243343).

The spelling of 22321200031021 in words is "twenty-two trillion, three hundred twenty-one billion, two hundred million, thirty-one thousand, twenty-one".