113403022121 has 4 divisors (see below), whose sum is σ = 113405336772. Its totient is φ = 113400707472.

The previous prime is 113403022097. The next prime is 113403022123. The reversal of 113403022121 is 121220304311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121220304311 = 59 ⋅2054581429.

It can be written as a sum of positive squares in 2 ways, for example, as 96512120896 + 16890901225 = 310664^2 + 129965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113403022121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113403022093 and 113403022102.

It is not an unprimeable number, because it can be changed into a prime (113403022123) 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 in 3 ways as a sum of consecutive naturals, for example, 1082210 + ... + 1182363.

It is an arithmetic number, because the mean of its divisors is an integer number (28351334193).

Almost surely, 2^113403022121 is an apocalyptic number.

It is an amenable number.

113403022121 is a deficient number, since it is larger than the sum of its proper divisors (2314651).

113403022121 is an equidigital number, since it uses as much as digits as its factorization.

113403022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314650.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 113403022121 its reverse (121220304311), we get a palindrome (234623326432).

The spelling of 113403022121 in words is "one hundred thirteen billion, four hundred three million, twenty-two thousand, one hundred twenty-one".