111111101902 has 16 divisors (see below), whose sum is σ = 177957521280. Its totient is φ = 51904275192.

The previous prime is 111111101867. The next prime is 111111101909. The reversal of 111111101902 is 209101111111.

It is a self number, because there is not a number n which added to its sum of digits gives 111111101902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111101909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28084752 + ... + 28088707.

It is an arithmetic number, because the mean of its divisors is an integer number (11122345080).

Almost surely, 2^111111101902 is an apocalyptic number.

111111101902 is a deficient number, since it is larger than the sum of its proper divisors (66846419378).

111111101902 is a wasteful number, since it uses less digits than its factorization.

111111101902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56173527.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 111111101902 in words is "one hundred eleven billion, one hundred eleven million, one hundred one thousand, nine hundred two".