2010012121021 has 4 divisors (see below), whose sum is σ = 2010034494432. Its totient is φ = 2009989747612.

The previous prime is 2010012121001. The next prime is 2010012121043. The reversal of 2010012121021 is 1201212100102.

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 a de Polignac number, because none of the positive numbers 2^k-2010012121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010012120992 and 2010012121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010012121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11051401 + ... + 11231806.

It is an arithmetic number, because the mean of its divisors is an integer number (502508623608).

Almost surely, 2^{2010012121021} is an apocalyptic number.

It is an amenable number.

2010012121021 is a deficient number, since it is larger than the sum of its proper divisors (22373411).

2010012121021 is an equidigital number, since it uses as much as digits as its factorization.

2010012121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22373410.

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

Adding to 2010012121021 its reverse (1201212100102), we get a palindrome (3211224221123).

The spelling of 2010012121021 in words is "two trillion, ten billion, twelve million, one hundred twenty-one thousand, twenty-one".