113121201 has 16 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 72782160.

The previous prime is 113121187. The next prime is 113121209. The reversal of 113121201 is 102121311.

It is not a de Polignac number, because 113121201 - 2¹⁰ = 113120177 is a prime.

It is a super-2 number, since 2×113121201² = 25592812231364802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113121209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37516 + ... + 40418.

It is an arithmetic number, because the mean of its divisors is an integer number (9757440).

Almost surely, 2^113121201 is an apocalyptic number.

It is an amenable number.

113121201 is a deficient number, since it is larger than the sum of its proper divisors (42997839).

113121201 is a wasteful number, since it uses less digits than its factorization.

113121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356.

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

The square root of 113121201 is about 10635.8451004140. The cubic root of 113121201 is about 483.6315995979.

Adding to 113121201 its reverse (102121311), we get a palindrome (215242512).

The spelling of 113121201 in words is "one hundred thirteen million, one hundred twenty-one thousand, two hundred one".