20223131211021 has 8 divisors (see below), whose sum is σ = 26964221261440. Its totient is φ = 13482064317312.

The previous prime is 20223131210999. The next prime is 20223131211029. The reversal of 20223131211021 is 12011213132202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20223131211021 - 2¹⁵ = 20223131178253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223131211029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3637156 + ... + 7326333.

It is an arithmetic number, because the mean of its divisors is an integer number (3370527657680).

Almost surely, 2^{20223131211021} is an apocalyptic number.

It is an amenable number.

20223131211021 is a deficient number, since it is larger than the sum of its proper divisors (6741090050419).

20223131211021 is a wasteful number, since it uses less digits than its factorization.

20223131211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578355.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20223131211021 its reverse (12011213132202), we get a palindrome (32234344343223).

The spelling of 20223131211021 in words is "twenty trillion, two hundred twenty-three billion, one hundred thirty-one million, two hundred eleven thousand, twenty-one".