20212031133 has 24 divisors (see below), whose sum is σ = 33570608448. Its totient is φ = 11478868992.

The previous prime is 20212031111. The next prime is 20212031137. The reversal of 20212031133 is 33113021202.

20212031133 is a `hidden beast` number, since 202 + 120 + 311 + 33 = 666.

It is not a de Polignac number, because 20212031133 - 2⁶ = 20212031069 is a prime.

It is a super-2 number, since 2×20212031133² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212031137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 973860 + ... + 994397.

It is an arithmetic number, because the mean of its divisors is an integer number (1398775352).

Almost surely, 2^20212031133 is an apocalyptic number.

It is an amenable number.

20212031133 is a deficient number, since it is larger than the sum of its proper divisors (13358577315).

20212031133 is a wasteful number, since it uses less digits than its factorization.

20212031133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968433 (or 1968430 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20212031133 its reverse (33113021202), we get a palindrome (53325052335).

The spelling of 20212031133 in words is "twenty billion, two hundred twelve million, thirty-one thousand, one hundred thirty-three".