20210212312 has 32 divisors (see below), whose sum is σ = 38293488720. Its totient is φ = 9998742400.

The previous prime is 20210212249. The next prime is 20210212313. The reversal of 20210212312 is 21321201202.

It is a happy number.

It is a super-2 number, since 2×20210212312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210212313) 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, 1436898 + ... + 1450894.

Almost surely, 2^20210212312 is an apocalyptic number.

It is an amenable number.

20210212312 is a deficient number, since it is larger than the sum of its proper divisors (18083276408).

20210212312 is a wasteful number, since it uses less digits than its factorization.

20210212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15891 (or 15887 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20210212312 its reverse (21321201202), we get a palindrome (41531413514).

The spelling of 20210212312 in words is "twenty billion, two hundred ten million, two hundred twelve thousand, three hundred twelve".