22001332031 has 4 divisors (see below), whose sum is σ = 25144379472. Its totient is φ = 18858284592.

The previous prime is 22001332007. The next prime is 22001332033. The reversal of 22001332031 is 13023310022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13023310022 = 2 ⋅6511655011.

It is a de Polignac number, because none of the positive numbers 2^k-22001332031 is a prime.

It is a super-2 number, since 2×22001332031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001332033) 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, 1571523710 + ... + 1571523723.

It is an arithmetic number, because the mean of its divisors is an integer number (6286094868).

Almost surely, 2^22001332031 is an apocalyptic number.

22001332031 is a deficient number, since it is larger than the sum of its proper divisors (3143047441).

22001332031 is an equidigital number, since it uses as much as digits as its factorization.

22001332031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143047440.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 22001332031 its reverse (13023310022), we get a palindrome (35024642053).

The spelling of 22001332031 in words is "twenty-two billion, one million, three hundred thirty-two thousand, thirty-one".