20312212031133 has 16 divisors (see below), whose sum is σ = 29654057966592. Its totient is φ = 12265005582000.

The previous prime is 20312212031119. The next prime is 20312212031231. The reversal of 20312212031133 is 33113021221302.

It is not a de Polignac number, because 20312212031133 - 2⁵ = 20312212031101 is a prime.

It is a super-2 number, since 2×20312212031133² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312212031333) 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, 1135639723 + ... + 1135657608.

It is an arithmetic number, because the mean of its divisors is an integer number (1853378622912).

Almost surely, 2^{20312212031133} is an apocalyptic number.

It is an amenable number.

20312212031133 is a deficient number, since it is larger than the sum of its proper divisors (9341845935459).

20312212031133 is a wasteful number, since it uses less digits than its factorization.

20312212031133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271297616.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20312212031133 its reverse (33113021221302), we get a palindrome (53425233252435).

The spelling of 20312212031133 in words is "twenty trillion, three hundred twelve billion, two hundred twelve million, thirty-one thousand, one hundred thirty-three".