2100200102121 has 16 divisors (see below), whose sum is σ = 3153379627008. Its totient is φ = 1231788915600.

The previous prime is 2100200102107. The next prime is 2100200102153. The reversal of 2100200102121 is 1212010020012.

It is not a de Polignac number, because 2100200102121 - 2²⁷ = 2100065884393 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2100200102097 and 2100200102106.

It is not an unprimeable number, because it can be changed into a prime (2100200102171) 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, 1026489741 + ... + 1026491786.

It is an arithmetic number, because the mean of its divisors is an integer number (197086226688).

Almost surely, 2^{2100200102121} is an apocalyptic number.

It is an amenable number.

2100200102121 is a deficient number, since it is larger than the sum of its proper divisors (1053179524887).

2100200102121 is a wasteful number, since it uses less digits than its factorization.

2100200102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052981572.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100200102121 its reverse (1212010020012), we get a palindrome (3312210122133).

The spelling of 2100200102121 in words is "two trillion, one hundred billion, two hundred million, one hundred two thousand, one hundred twenty-one".