212202102021111 has 32 divisors (see below), whose sum is σ = 314699360310720. Its totient is φ = 141321473851392.

The previous prime is 212202102021097. The next prime is 212202102021127. The reversal of 212202102021111 is 111120201202212.

212202102021111 is a `hidden beast` number, since 2 + 1 + 220 + 210 + 20 + 211 + 1 + 1 = 666.

It is not a de Polignac number, because 212202102021111 - 2¹⁸ = 212202101758967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202102022111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152859121 + ... + 154241093.

It is an arithmetic number, because the mean of its divisors is an integer number (9834355009710).

Almost surely, 2^{212202102021111} is an apocalyptic number.

212202102021111 is a deficient number, since it is larger than the sum of its proper divisors (102497258289609).

212202102021111 is a wasteful number, since it uses less digits than its factorization.

212202102021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387872 (or 1387866 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212202102021111 its reverse (111120201202212), we get a palindrome (323322303223323).

The spelling of 212202102021111 in words is "two hundred twelve trillion, two hundred two billion, one hundred two million, twenty-one thousand, one hundred eleven".