2120010121021 has 8 divisors (see below), whose sum is σ = 2284302903680. Its totient is φ = 1955890921392.

The previous prime is 2120010121013. The next prime is 2120010121051. The reversal of 2120010121021 is 1201210100212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120010121021 - 2³ = 2120010121013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120010120992 and 2120010121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120010121051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43370385 + ... + 43419238.

It is an arithmetic number, because the mean of its divisors is an integer number (285537862960).

Almost surely, 2^{2120010121021} is an apocalyptic number.

It is an amenable number.

2120010121021 is a deficient number, since it is larger than the sum of its proper divisors (164292782659).

2120010121021 is a wasteful number, since it uses less digits than its factorization.

2120010121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86791515.

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

Adding to 2120010121021 its reverse (1201210100212), we get a palindrome (3321220221233).

The spelling of 2120010121021 in words is "two trillion, one hundred twenty billion, ten million, one hundred twenty-one thousand, twenty-one".