213331131202021 has 16 divisors (see below), whose sum is σ = 248431442563584. Its totient is φ = 179387603800704.

The previous prime is 213331131202009. The next prime is 213331131202157. The reversal of 213331131202021 is 120202131133312.

It is a cyclic number.

It is not a de Polignac number, because 213331131202021 - 2¹¹ = 213331131199973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213331131202421) 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, 24330936 + ... + 31916401.

It is an arithmetic number, because the mean of its divisors is an integer number (15526965160224).

Almost surely, 2^{213331131202021} is an apocalyptic number.

It is an amenable number.

213331131202021 is a deficient number, since it is larger than the sum of its proper divisors (35100311361563).

213331131202021 is a wasteful number, since it uses less digits than its factorization.

213331131202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56257620.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 213331131202021 its reverse (120202131133312), we get a palindrome (333533262335333).

The spelling of 213331131202021 in words is "two hundred thirteen trillion, three hundred thirty-one billion, one hundred thirty-one million, two hundred two thousand, twenty-one".