113220971 has 2 divisors, whose sum is σ = 113220972. Its totient is φ = 113220970.

The previous prime is 113220949. The next prime is 113221001. The reversal of 113220971 is 179022311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113220971 - 2¹⁴ = 113204587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113220971.

It is not a weakly prime, because it can be changed into another prime (113220911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610485 + 56610486.

It is an arithmetic number, because the mean of its divisors is an integer number (56610486).

Almost surely, 2^113220971 is an apocalyptic number.

113220971 is a deficient number, since it is larger than the sum of its proper divisors (1).

113220971 is an equidigital number, since it uses as much as digits as its factorization.

113220971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 113220971 is about 10640.5343380866. The cubic root of 113220971 is about 483.7737413761.

The spelling of 113220971 in words is "one hundred thirteen million, two hundred twenty thousand, nine hundred seventy-one".