111331122102 has 48 divisors (see below), whose sum is σ = 253779244992. Its totient is φ = 35226714240.

The previous prime is 111331122101. The next prime is 111331122103. The reversal of 111331122102 is 201221133111.

111331122102 is a `hidden beast` number, since 111 + 331 + 1 + 221 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (111331122101) and next prime (111331122103).

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 (111331122101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2011278 + ... + 2065889.

It is an arithmetic number, because the mean of its divisors is an integer number (5287067604).

Almost surely, 2^111331122102 is an apocalyptic number.

111331122102 is an abundant number, since it is smaller than the sum of its proper divisors (142448122890).

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

111331122102 is a wasteful number, since it uses less digits than its factorization.

111331122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077253 (or 4077250 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111331122102 its reverse (201221133111), we get a palindrome (312552255213).

The spelling of 111331122102 in words is "one hundred eleven billion, three hundred thirty-one million, one hundred twenty-two thousand, one hundred two".