202012112211111 has 16 divisors (see below), whose sum is σ = 316881744645600. Its totient is φ = 126752697857664.

The previous prime is 202012112211073. The next prime is 202012112211113. The reversal of 202012112211111 is 111112211210202.

It is a happy number.

202012112211111 is a `hidden beast` number, since 20 + 201 + 211 + 221 + 1 + 1 + 11 = 666.

It is not a de Polignac number, because 202012112211111 - 2¹³ = 202012112202919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012112211113) 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, 220056766656 + ... + 220056767573.

It is an arithmetic number, because the mean of its divisors is an integer number (19805109040350).

Almost surely, 2^{202012112211111} is an apocalyptic number.

202012112211111 is a deficient number, since it is larger than the sum of its proper divisors (114869632434489).

202012112211111 is a wasteful number, since it uses less digits than its factorization.

202012112211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440113534255 (or 440113534249 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 202012112211111 its reverse (111112211210202), we get a palindrome (313124323421313).

The spelling of 202012112211111 in words is "two hundred two trillion, twelve billion, one hundred twelve million, two hundred eleven thousand, one hundred eleven".