111111110100010 has 128 divisors (see below), whose sum is σ = 209974599088128. Its totient is φ = 42297209856000.

The previous prime is 111111110099989. The next prime is 111111110100061. The reversal of 111111110100010 is 10001011111111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 111111110100010.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1111161115 + ... + 1111261105.

It is an arithmetic number, because the mean of its divisors is an integer number (1640426555376).

Almost surely, 2^{111111110100010} is an apocalyptic number.

111111110100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111110100010 is a deficient number, since it is larger than the sum of its proper divisors (98863488988118).

111111110100010 is a wasteful number, since it uses less digits than its factorization.

111111110100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100520.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111111110100010 its reverse (10001011111111), we get a palindrome (121112121211121).

The spelling of 111111110100010 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, one hundred thousand, ten".