111612601 has 4 divisors (see below), whose sum is σ = 113504400. Its totient is φ = 109720804.

The previous prime is 111612587. The next prime is 111612607. The reversal of 111612601 is 106216111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106216111 = 5179 ⋅20509.

It is a cyclic number.

It is not a de Polignac number, because 111612601 - 2²³ = 103223993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111612607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945811 + ... + 945928.

It is an arithmetic number, because the mean of its divisors is an integer number (28376100).

Almost surely, 2^111612601 is an apocalyptic number.

It is an amenable number.

111612601 is a deficient number, since it is larger than the sum of its proper divisors (1891799).

111612601 is an equidigital number, since it uses as much as digits as its factorization.

111612601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891798.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 111612601 is about 10564.6865074171. The cubic root of 111612601 is about 481.4720449230.

Adding to 111612601 its reverse (106216111), we get a palindrome (217828712).

The spelling of 111612601 in words is "one hundred eleven million, six hundred twelve thousand, six hundred one".