22332131021 has 4 divisors (see below), whose sum is σ = 22340257500. Its totient is φ = 22324004544.

The previous prime is 22332131009. The next prime is 22332131027. The reversal of 22332131021 is 12013123322.

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 3859515625 + 18472615396 = 62125^2 + 135914^2 .

It is a cyclic number.

It is not a de Polignac number, because 22332131021 - 2²² = 22327936717 is a prime.

It is a super-2 number, since 2×22332131021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22332130984 and 22332131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22332131027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4059116 + ... + 4064613.

It is an arithmetic number, because the mean of its divisors is an integer number (5585064375).

Almost surely, 2^22332131021 is an apocalyptic number.

It is an amenable number.

22332131021 is a deficient number, since it is larger than the sum of its proper divisors (8126479).

22332131021 is an equidigital number, since it uses as much as digits as its factorization.

22332131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8126478.

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

Adding to 22332131021 its reverse (12013123322), we get a palindrome (34345254343).

The spelling of 22332131021 in words is "twenty-two billion, three hundred thirty-two million, one hundred thirty-one thousand, twenty-one".