113331121 has 2 divisors, whose sum is σ = 113331122. Its totient is φ = 113331120.

The previous prime is 113331091. The next prime is 113331131. The reversal of 113331121 is 121133311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74580496 + 38750625 = 8636^2 + 6225^2 .

It is a cyclic number.

It is not a de Polignac number, because 113331121 - 2¹⁹ = 112806833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113331095 and 113331104.

It is not a weakly prime, because it can be changed into another prime (113331131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56665560 + 56665561.

It is an arithmetic number, because the mean of its divisors is an integer number (56665561).

Almost surely, 2^113331121 is an apocalyptic number.

It is an amenable number.

113331121 is a deficient number, since it is larger than the sum of its proper divisors (1).

113331121 is an equidigital number, since it uses as much as digits as its factorization.

113331121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 16.

The square root of 113331121 is about 10645.7090416750. The cubic root of 113331121 is about 483.9305745308.

Adding to 113331121 its reverse (121133311), we get a palindrome (234464432).

The spelling of 113331121 in words is "one hundred thirteen million, three hundred thirty-one thousand, one hundred twenty-one".