113220101 has 2 divisors, whose sum is σ = 113220102. Its totient is φ = 113220100.

The previous prime is 113220077. The next prime is 113220103. The reversal of 113220101 is 101022311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112890625 + 329476 = 10625^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 113220101 - 2²⁶ = 46111237 is a prime.

Together with 113220103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113220103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610050 + 56610051.

It is an arithmetic number, because the mean of its divisors is an integer number (56610051).

Almost surely, 2^113220101 is an apocalyptic number.

It is an amenable number.

113220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

113220101 is an equidigital number, since it uses as much as digits as its factorization.

113220101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 113220101 is about 10640.4934566025. The cubic root of 113220101 is about 483.7725022528.

Adding to 113220101 its reverse (101022311), we get a palindrome (214242412).

The spelling of 113220101 in words is "one hundred thirteen million, two hundred twenty thousand, one hundred one".