21231131333022 has 24 divisors (see below), whose sum is σ = 49539306444264. Its totient is φ = 6532655794704.

The previous prime is 21231131332991. The next prime is 21231131333039. The reversal of 21231131333022 is 22033313113212.

21231131333022 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 11 + 313 + 330 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45365665008 + ... + 45365665475.

It is an arithmetic number, because the mean of its divisors is an integer number (2064137768511).

Almost surely, 2^{21231131333022} is an apocalyptic number.

21231131333022 is an abundant number, since it is smaller than the sum of its proper divisors (28308175111242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21231131333022 is a wasteful number, since it uses less digits than its factorization.

21231131333022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90731330504 (or 90731330501 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21231131333022 its reverse (22033313113212), we get a palindrome (43264444446234).

The spelling of 21231131333022 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-three thousand, twenty-two".