113210121 has 16 divisors (see below), whose sum is σ = 155744064. Its totient is φ = 73093824.

The previous prime is 113210077. The next prime is 113210129. The reversal of 113210121 is 121012311.

It is not a de Polignac number, because 113210121 - 2⁶ = 113210057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113210097 and 113210106.

It is not an unprimeable number, because it can be changed into a prime (113210129) 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, 22951 + ... + 27443.

It is an arithmetic number, because the mean of its divisors is an integer number (9734004).

Almost surely, 2^113210121 is an apocalyptic number.

It is an amenable number.

113210121 is a deficient number, since it is larger than the sum of its proper divisors (42533943).

113210121 is a wasteful number, since it uses less digits than its factorization.

113210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760.

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

The square root of 113210121 is about 10640.0244830545. The cubic root of 113210121 is about 483.7582874876.

Adding to 113210121 its reverse (121012311), we get a palindrome (234222432).

The spelling of 113210121 in words is "one hundred thirteen million, two hundred ten thousand, one hundred twenty-one".