113415221 has 2 divisors, whose sum is σ = 113415222. Its totient is φ = 113415220.

The previous prime is 113415173. The next prime is 113415229. The reversal of 113415221 is 122514311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102292996 + 11122225 = 10114^2 + 3335^2 .

It is an emirp because it is prime and its reverse (122514311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113415221 - 2²⁶ = 46306357 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 113415193 and 113415202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113415229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56707610 + 56707611.

It is an arithmetic number, because the mean of its divisors is an integer number (56707611).

Almost surely, 2^113415221 is an apocalyptic number.

It is an amenable number.

113415221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113415221 is an equidigital number, since it uses as much as digits as its factorization.

113415221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 113415221 is about 10649.6582574278. The cubic root of 113415221 is about 484.0502489209.

Adding to 113415221 its reverse (122514311), we get a palindrome (235929532).

The spelling of 113415221 in words is "one hundred thirteen million, four hundred fifteen thousand, two hundred twenty-one".