20213222033231 has 16 divisors (see below), whose sum is σ = 20804777354880. Its totient is φ = 19631956085280.

The previous prime is 20213222033219. The next prime is 20213222033261. The reversal of 20213222033231 is 13233022231202.

It is a cyclic number.

It is not a de Polignac number, because 20213222033231 - 2¹⁴ = 20213222016847 is a prime.

It is a super-2 number, since 2×20213222033231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20213222033231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213222033261) 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, 5168696 + ... + 8194013.

It is an arithmetic number, because the mean of its divisors is an integer number (1300298584680).

Almost surely, 2^{20213222033231} is an apocalyptic number.

20213222033231 is a deficient number, since it is larger than the sum of its proper divisors (591555321649).

20213222033231 is a wasteful number, since it uses less digits than its factorization.

20213222033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13363094.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20213222033231 its reverse (13233022231202), we get a palindrome (33446244264433).

The spelling of 20213222033231 in words is "twenty trillion, two hundred thirteen billion, two hundred twenty-two million, thirty-three thousand, two hundred thirty-one".