22333031021 has 16 divisors (see below), whose sum is σ = 26230068480. Its totient is φ = 18613307520.

The previous prime is 22333031011. The next prime is 22333031023. The reversal of 22333031021 is 12013033322.

It is a cyclic number.

It is not a de Polignac number, because 22333031021 - 2¹⁸ = 22332768877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22333030984 and 22333031002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22333031023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389936 + ... + 443526.

It is an arithmetic number, because the mean of its divisors is an integer number (1639379280).

Almost surely, 2^22333031021 is an apocalyptic number.

It is an amenable number.

22333031021 is a deficient number, since it is larger than the sum of its proper divisors (3897037459).

22333031021 is a wasteful number, since it uses less digits than its factorization.

22333031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55244.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 22333031021 its reverse (12013033322), we get a palindrome (34346064343).

The spelling of 22333031021 in words is "twenty-two billion, three hundred thirty-three million, thirty-one thousand, twenty-one".