2021113012212 has 72 divisors (see below), whose sum is σ = 5844627990656. Its totient is φ = 576881590464.

The previous prime is 2021113012211. The next prime is 2021113012229. The reversal of 2021113012212 is 2122103111202.

It is a super-2 number, since 2×2021113012212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021113012211) 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, 3770968 + ... + 4273455.

Almost surely, 2^{2021113012212} is an apocalyptic number.

It is an amenable number.

2021113012212 is an abundant number, since it is smaller than the sum of its proper divisors (3823514978444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021113012212 is a wasteful number, since it uses less digits than its factorization.

2021113012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045437 (or 8045432 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2021113012212 its reverse (2122103111202), we get a palindrome (4143216123414).

The spelling of 2021113012212 in words is "two trillion, twenty-one billion, one hundred thirteen million, twelve thousand, two hundred twelve".