113226121 has 4 divisors (see below), whose sum is σ = 117130500. Its totient is φ = 109321744.

The previous prime is 113226119. The next prime is 113226131. The reversal of 113226121 is 121622311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121622311 = 1117 ⋅108883.

It can be written as a sum of positive squares in 2 ways, for example, as 74649600 + 38576521 = 8640^2 + 6211^2 .

It is a cyclic number.

It is not a de Polignac number, because 113226121 - 2¹ = 113226119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113226101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952146 + ... + 1952203.

It is an arithmetic number, because the mean of its divisors is an integer number (29282625).

Almost surely, 2^113226121 is an apocalyptic number.

It is an amenable number.

113226121 is a deficient number, since it is larger than the sum of its proper divisors (3904379).

113226121 is an equidigital number, since it uses as much as digits as its factorization.

113226121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904378.

The product of its digits is 144, while the sum is 19.

The square root of 113226121 is about 10640.7763344598. The cubic root of 113226121 is about 483.7810762864.

Adding to 113226121 its reverse (121622311), we get a palindrome (234848432).

The spelling of 113226121 in words is "one hundred thirteen million, two hundred twenty-six thousand, one hundred twenty-one".