111072061 has 4 divisors (see below), whose sum is σ = 111323232. Its totient is φ = 110820892.

The previous prime is 111071963. The next prime is 111072077. The reversal of 111072061 is 160270111.

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: 160270111 = 19 ⋅8435269.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111072061 is a prime.

It is a pancake number, because a pancake can be divided into 111072061 parts by 14904 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111072361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124921 + ... + 125806.

It is an arithmetic number, because the mean of its divisors is an integer number (27830808).

Almost surely, 2^111072061 is an apocalyptic number.

It is an amenable number.

111072061 is a deficient number, since it is larger than the sum of its proper divisors (251171).

111072061 is an equidigital number, since it uses as much as digits as its factorization.

111072061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251170.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 111072061 is about 10539.0730617071. The cubic root of 111072061 is about 480.6935301640.

The spelling of 111072061 in words is "one hundred eleven million, seventy-two thousand, sixty-one".