2100310121 has 16 divisors (see below), whose sum is σ = 2586691968. Its totient is φ = 1660694400.

The previous prime is 2100310097. The next prime is 2100310127. The reversal of 2100310121 is 1210130012.

It is a cyclic number.

It is not a de Polignac number, because 2100310121 - 2²⁶ = 2033201257 is a prime.

It is a super-2 number, since 2×2100310121² = 8822605208750069282, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2100310127) 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, 149906 + ... + 163316.

It is an arithmetic number, because the mean of its divisors is an integer number (161668248).

Almost surely, 2^2100310121 is an apocalyptic number.

It is an amenable number.

2100310121 is a deficient number, since it is larger than the sum of its proper divisors (486381847).

2100310121 is a wasteful number, since it uses less digits than its factorization.

2100310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152.

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

The square root of 2100310121 is about 45829.1405221612. The cubic root of 2100310121 is about 1280.6421991055.

Adding to 2100310121 its reverse (1210130012), we get a palindrome (3310440133).

The spelling of 2100310121 in words is "two billion, one hundred million, three hundred ten thousand, one hundred twenty-one".