113002121 has 4 divisors (see below), whose sum is σ = 113827092. Its totient is φ = 112177152.

The previous prime is 113002091. The next prime is 113002157. The reversal of 113002121 is 121200311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121200311 = 229 ⋅529259.

It can be written as a sum of positive squares in 2 ways, for example, as 34058896 + 78943225 = 5836^2 + 8885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113002121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113002171) 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 in 3 ways as a sum of consecutive naturals, for example, 412280 + ... + 412553.

It is an arithmetic number, because the mean of its divisors is an integer number (28456773).

Almost surely, 2^113002121 is an apocalyptic number.

It is an amenable number.

113002121 is a deficient number, since it is larger than the sum of its proper divisors (824971).

113002121 is an equidigital number, since it uses as much as digits as its factorization.

113002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824970.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 113002121 is about 10630.2455757146. The cubic root of 113002121 is about 483.4618375186.

Adding to 113002121 its reverse (121200311), we get a palindrome (234202432).

The spelling of 113002121 in words is "one hundred thirteen million, two thousand, one hundred twenty-one".