2110021012121 has 4 divisors (see below), whose sum is σ = 2301841104144. Its totient is φ = 1918200920100.

The previous prime is 2110021012087. The next prime is 2110021012147. The reversal of 2110021012121 is 1212101200112.

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 2110021012121 - 2²⁶ = 2109953903257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2110021012096 and 2110021012105.

It is not an unprimeable number, because it can be changed into a prime (2110021012721) 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, 95910045995 + ... + 95910046016.

It is an arithmetic number, because the mean of its divisors is an integer number (575460276036).

Almost surely, 2^{2110021012121} is an apocalyptic number.

It is an amenable number.

2110021012121 is a deficient number, since it is larger than the sum of its proper divisors (191820092023).

2110021012121 is a wasteful number, since it uses less digits than its factorization.

2110021012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191820092022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2110021012121 its reverse (1212101200112), we get a palindrome (3322122212233).

The spelling of 2110021012121 in words is "two trillion, one hundred ten billion, twenty-one million, twelve thousand, one hundred twenty-one".