2100010012121 has 32 divisors (see below), whose sum is σ = 2633438304000. Its totient is φ = 1632831363072.

The previous prime is 2100010012099. The next prime is 2100010012129. The reversal of 2100010012121 is 1212100100012.

It is not a de Polignac number, because 2100010012121 - 2¹⁰ = 2100010011097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2100010012129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1428890 + ... + 2498348.

It is an arithmetic number, because the mean of its divisors is an integer number (82294947000).

Almost surely, 2^{2100010012121} is an apocalyptic number.

It is an amenable number.

2100010012121 is a deficient number, since it is larger than the sum of its proper divisors (533428291879).

2100010012121 is a wasteful number, since it uses less digits than its factorization.

2100010012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070081.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2100010012121 its reverse (1212100100012), we get a palindrome (3312110112133).

The spelling of 2100010012121 in words is "two trillion, one hundred billion, ten million, twelve thousand, one hundred twenty-one".