2100211123 has 4 divisors (see below), whose sum is σ = 2101213800. Its totient is φ = 2099208448.

The previous prime is 2100211111. The next prime is 2100211159. The reversal of 2100211123 is 3211120012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100211123 - 2²⁹ = 1563340211 is a prime.

It is a super-2 number, since 2×2100211123² = 8821773522345842258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100211193) 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, 498190 + ... + 502387.

It is an arithmetic number, because the mean of its divisors is an integer number (525303450).

Almost surely, 2^2100211123 is an apocalyptic number.

2100211123 is a deficient number, since it is larger than the sum of its proper divisors (1002677).

2100211123 is a wasteful number, since it uses less digits than its factorization.

2100211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002676.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2100211123 is about 45828.0604324468. The cubic root of 2100211123 is about 1280.6220777899.

Adding to 2100211123 its reverse (3211120012), we get a palindrome (5311331135).

The spelling of 2100211123 in words is "two billion, one hundred million, two hundred eleven thousand, one hundred twenty-three".