111381102 has 32 divisors (see below), whose sum is σ = 282873600. Its totient is φ = 31823064.

The previous prime is 111381029. The next prime is 111381121. The reversal of 111381102 is 201183111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146952 + ... + 147707.

It is an arithmetic number, because the mean of its divisors is an integer number (8839800).

Almost surely, 2^111381102 is an apocalyptic number.

111381102 is an abundant number, since it is smaller than the sum of its proper divisors (171492498).

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

111381102 is a wasteful number, since it uses less digits than its factorization.

111381102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294677 (or 294671 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 111381102 is about 10553.7245558144. The cubic root of 111381102 is about 481.1389360390.

It can be divided in two parts, 1113 and 81102, that added together give a triangular number (82215 = T₄₀₅).

The spelling of 111381102 in words is "one hundred eleven million, three hundred eighty-one thousand, one hundred two".