202112212111 has 16 divisors (see below), whose sum is σ = 206999981568. Its totient is φ = 197299648000.

The previous prime is 202112212069. The next prime is 202112212123. The reversal of 202112212111 is 111212211202.

It is a cyclic number.

It is not a de Polignac number, because 202112212111 - 2¹¹ = 202112210063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112212411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2133525 + ... + 2226241.

It is an arithmetic number, because the mean of its divisors is an integer number (12937498848).

Almost surely, 2^202112212111 is an apocalyptic number.

202112212111 is a deficient number, since it is larger than the sum of its proper divisors (4887769457).

202112212111 is a wasteful number, since it uses less digits than its factorization.

202112212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93122.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 202112212111 its reverse (111212211202), we get a palindrome (313324423313).

Subtracting from 202112212111 its reverse (111212211202), we obtain a palindrome (90900000909).

It can be divided in two parts, 20211 and 2212111, that added together give a palindrome (2232322).

The spelling of 202112212111 in words is "two hundred two billion, one hundred twelve million, two hundred twelve thousand, one hundred eleven".