212111122112022 has 128 divisors (see below), whose sum is σ = 492200584888320. Its totient is φ = 59688888336000.

The previous prime is 212111122112011. The next prime is 212111122112027. The reversal of 212111122112022 is 220211221111212.

It is a super-2 number, since 2×212111122112022² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 212111122112022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111122112027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 577802743 + ... + 578169725.

It is an arithmetic number, because the mean of its divisors is an integer number (3845317069440).

Almost surely, 2^{212111122112022} is an apocalyptic number.

212111122112022 is an abundant number, since it is smaller than the sum of its proper divisors (280089462776298).

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

212111122112022 is a wasteful number, since it uses less digits than its factorization.

212111122112022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367858.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212111122112022 its reverse (220211221111212), we get a palindrome (432322343223234).

The spelling of 212111122112022 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twelve thousand, twenty-two".