22001021032031 has 4 divisors (see below), whose sum is σ = 22001076144432. Its totient is φ = 22000965919632.

The previous prime is 22001021032027. The next prime is 22001021032061. The reversal of 22001021032031 is 13023012010022.

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

It is a cyclic number.

It is not a de Polignac number, because 22001021032031 - 2² = 22001021032027 is a prime.

It is a super-2 number, since 2×22001021032031² (a number of 27 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 (22001021032061) 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, 26952995 + ... + 27757268.

It is an arithmetic number, because the mean of its divisors is an integer number (5500269036108).

Almost surely, 2^{22001021032031} is an apocalyptic number.

22001021032031 is a deficient number, since it is larger than the sum of its proper divisors (55112401).

22001021032031 is an equidigital number, since it uses as much as digits as its factorization.

22001021032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55112400.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22001021032031 its reverse (13023012010022), we get a palindrome (35024033042053).

The spelling of 22001021032031 in words is "twenty-two trillion, one billion, twenty-one million, thirty-two thousand, thirty-one".