2010121020221 has 4 divisors (see below), whose sum is σ = 2018898841500. Its totient is φ = 2001343198944.

The previous prime is 2010121020203. The next prime is 2010121020307. The reversal of 2010121020221 is 1220201210102.

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 1663919404900 + 346201615321 = 1289930^2 + 588389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010121020221 - 2³⁰ = 2009047278397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010121020196 and 2010121020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010121050221) 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, 4388910296 + ... + 4388910753.

It is an arithmetic number, because the mean of its divisors is an integer number (504724710375).

Almost surely, 2^{2010121020221} is an apocalyptic number.

It is an amenable number.

2010121020221 is a deficient number, since it is larger than the sum of its proper divisors (8777821279).

2010121020221 is an equidigital number, since it uses as much as digits as its factorization.

2010121020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8777821278.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2010121020221 its reverse (1220201210102), we get a palindrome (3230322230323).

The spelling of 2010121020221 in words is "two trillion, ten billion, one hundred twenty-one million, twenty thousand, two hundred twenty-one".