2010120121021 has 4 divisors (see below), whose sum is σ = 2010131296732. Its totient is φ = 2010108945312.

The previous prime is 2010120121007. The next prime is 2010120121027. The reversal of 2010120121021 is 1201210210102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 626875980025 + 1383244140996 = 791755^2 + 1176114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010120121021 - 2⁷ = 2010120120893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010120120992 and 2010120121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010120121027) 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, 5313570 + ... + 5679283.

It is an arithmetic number, because the mean of its divisors is an integer number (502532824183).

Almost surely, 2^{2010120121021} is an apocalyptic number.

It is an amenable number.

2010120121021 is a deficient number, since it is larger than the sum of its proper divisors (11175711).

2010120121021 is a wasteful number, since it uses less digits than its factorization.

2010120121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11175710.

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

Adding to 2010120121021 its reverse (1201210210102), we get a palindrome (3211330331123).

The spelling of 2010120121021 in words is "two trillion, ten billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".