111213698 has 6 divisors (see below), whose sum is σ = 166842921. Its totient is φ = 55599392.

The previous prime is 111213679. The next prime is 111213719. The reversal of 111213698 is 896312111.

It can be written as a sum of positive squares in 2 ways, for example, as 106646929 + 4566769 = 10327^2 + 2137^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=7457.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11186 + ... + 18642.

Almost surely, 2^111213698 is an apocalyptic number.

111213698 is a deficient number, since it is larger than the sum of its proper divisors (55629223).

111213698 is an frugal number, since it uses more digits than its factorization.

111213698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14916 (or 7459 counting only the distinct ones).

The product of its digits is 2592, while the sum is 32.

The square root of 111213698 is about 10545.7905346162. The cubic root of 111213698 is about 480.8977671539.

Multiplying 111213698 by its sum of digits (32), we get a square (3558838336 = 59656²).

Multiplying 111213698 by its product of digits (2592), we get a square (288265905216 = 536904²).

The spelling of 111213698 in words is "one hundred eleven million, two hundred thirteen thousand, six hundred ninety-eight".