22321313021 has 32 divisors (see below), whose sum is σ = 28027918080. Its totient is φ = 17332761600.

The previous prime is 22321313009. The next prime is 22321313059. The reversal of 22321313021 is 12031312322.

It is not a de Polignac number, because 22321313021 - 2¹⁸ = 22321050877 is a prime.

It is a super-3 number, since 3×22321313021³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22321312984 and 22321313002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321313081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1132511 + ... + 1152051.

It is an arithmetic number, because the mean of its divisors is an integer number (875872440).

Almost surely, 2^22321313021 is an apocalyptic number.

It is an amenable number.

22321313021 is a deficient number, since it is larger than the sum of its proper divisors (5706605059).

22321313021 is a wasteful number, since it uses less digits than its factorization.

22321313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19925.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22321313021 its reverse (12031312322), we get a palindrome (34352625343).

The spelling of 22321313021 in words is "twenty-two billion, three hundred twenty-one million, three hundred thirteen thousand, twenty-one".