113221777 has 4 divisors (see below), whose sum is σ = 113258736. Its totient is φ = 113184820.

The previous prime is 113221723. The next prime is 113221781. The reversal of 113221777 is 777122311.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 113221777 - 2¹⁹ = 112697489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113231777) 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, 13423 + ... + 20164.

It is an arithmetic number, because the mean of its divisors is an integer number (28314684).

Almost surely, 2^113221777 is an apocalyptic number.

It is an amenable number.

113221777 is a deficient number, since it is larger than the sum of its proper divisors (36959).

113221777 is an equidigital number, since it uses as much as digits as its factorization.

113221777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36958.

The product of its digits is 4116, while the sum is 31.

The square root of 113221777 is about 10640.5722120570. The cubic root of 113221777 is about 483.7748893398.

The spelling of 113221777 in words is "one hundred thirteen million, two hundred twenty-one thousand, seven hundred seventy-seven".