20212011231 has 8 divisors (see below), whose sum is σ = 28121059200. Its totient is φ = 12888818712.

The previous prime is 20212011221. The next prime is 20212011233. The reversal of 20212011231 is 13211021202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20212011231 - 2¹⁸ = 20211749087 is a prime.

It is a super-2 number, since 2×20212011231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20212011231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212011233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146463781 + ... + 146463918.

It is an arithmetic number, because the mean of its divisors is an integer number (3515132400).

Almost surely, 2^20212011231 is an apocalyptic number.

20212011231 is a deficient number, since it is larger than the sum of its proper divisors (7909047969).

20212011231 is a wasteful number, since it uses less digits than its factorization.

20212011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292927725.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20212011231 its reverse (13211021202), we get a palindrome (33423032433).

The spelling of 20212011231 in words is "twenty billion, two hundred twelve million, eleven thousand, two hundred thirty-one".