2100121983 has 12 divisors (see below), whose sum is σ = 3034163808. Its totient is φ = 1399779360.

The previous prime is 2100121957. The next prime is 2100121997. The reversal of 2100121983 is 3891210012.

It is not a de Polignac number, because 2100121983 - 2⁵ = 2100121951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100121943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23923 + ... + 69083.

It is an arithmetic number, because the mean of its divisors is an integer number (252846984).

Almost surely, 2^2100121983 is an apocalyptic number.

2100121983 is a deficient number, since it is larger than the sum of its proper divisors (934041825).

2100121983 is a wasteful number, since it uses less digits than its factorization.

2100121983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50334 (or 50331 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2100121983 is about 45827.0878738765. The cubic root of 2100121983 is about 1280.6039595691.

Adding to 2100121983 its reverse (3891210012), we get a palindrome (5991331995).

The spelling of 2100121983 in words is "two billion, one hundred million, one hundred twenty-one thousand, nine hundred eighty-three".