113320121 has 4 divisors (see below), whose sum is σ = 113382372. Its totient is φ = 113257872.

The previous prime is 113320111. The next prime is 113320133. The reversal of 113320121 is 121023311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121023311 = 97 ⋅1247663.

It can be written as a sum of positive squares in 2 ways, for example, as 71588521 + 41731600 = 8461^2 + 6460^2 .

It is a cyclic number.

It is not a de Polignac number, because 113320121 - 2²² = 109125817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113320096 and 113320105.

It is not an unprimeable number, because it can be changed into a prime (113320111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28310 + ... + 32063.

It is an arithmetic number, because the mean of its divisors is an integer number (28345593).

Almost surely, 2^113320121 is an apocalyptic number.

It is an amenable number.

113320121 is a deficient number, since it is larger than the sum of its proper divisors (62251).

113320121 is an equidigital number, since it uses as much as digits as its factorization.

113320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62250.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 113320121 is about 10645.1923890553. The cubic root of 113320121 is about 483.9149171412.

Adding to 113320121 its reverse (121023311), we get a palindrome (234343432).

It can be divided in two parts, 11 and 3320121, that multiplied together give a triangular number (36521331 = T₈₅₄₆).

The spelling of 113320121 in words is "one hundred thirteen million, three hundred twenty thousand, one hundred twenty-one".