2100120102121 has 4 divisors (see below), whose sum is σ = 2105970019200. Its totient is φ = 2094270185044.

The previous prime is 2100120102079. The next prime is 2100120102131. The reversal of 2100120102121 is 1212010210012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100120102121 - 2¹⁷ = 2100119971049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100120102131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2924958001 + ... + 2924958718.

It is an arithmetic number, because the mean of its divisors is an integer number (526492504800).

Almost surely, 2^{2100120102121} is an apocalyptic number.

It is an amenable number.

2100120102121 is a deficient number, since it is larger than the sum of its proper divisors (5849917079).

2100120102121 is an equidigital number, since it uses as much as digits as its factorization.

2100120102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849917078.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100120102121 its reverse (1212010210012), we get a palindrome (3312130312133).

The spelling of 2100120102121 in words is "two trillion, one hundred billion, one hundred twenty million, one hundred two thousand, one hundred twenty-one".