202111111311102 has 32 divisors (see below), whose sum is σ = 513298060473600. Its totient is φ = 57746031803064.

The previous prime is 202111111311061. The next prime is 202111111311107. The reversal of 202111111311102 is 201113111111202.

202111111311102 is a `hidden beast` number, since 20 + 211 + 1 + 111 + 311 + 10 + 2 = 666.

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 (202111111311107) 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, 267342739452 + ... + 267342740207.

It is an arithmetic number, because the mean of its divisors is an integer number (16040564389800).

Almost surely, 2^{202111111311102} is an apocalyptic number.

202111111311102 is an abundant number, since it is smaller than the sum of its proper divisors (311186949162498).

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

202111111311102 is a wasteful number, since it uses less digits than its factorization.

202111111311102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534685479677 (or 534685479671 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 202111111311102 its reverse (201113111111202), we get a palindrome (403224222422304).

The spelling of 202111111311102 in words is "two hundred two trillion, one hundred eleven billion, one hundred eleven million, three hundred eleven thousand, one hundred two".