2010120211021 has 4 divisors (see below), whose sum is σ = 2164744842652. Its totient is φ = 1855495579392.

The previous prime is 2010120211009. The next prime is 2010120211037. The reversal of 2010120211021 is 1201120210102.

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 213485582025 + 1796634628996 = 462045^2 + 1340386^2 .

It is not a de Polignac number, because 2010120211021 - 2¹¹ = 2010120208973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 154624631617 = 2010120211021 / (2 + 0 + 1 + 0 + 1 + 2 + 0 + 2 + 1 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010120210992 and 2010120211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010120211081) 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, 77312315796 + ... + 77312315821.

It is an arithmetic number, because the mean of its divisors is an integer number (541186210663).

Almost surely, 2^{2010120211021} is an apocalyptic number.

It is an amenable number.

2010120211021 is a deficient number, since it is larger than the sum of its proper divisors (154624631631).

2010120211021 is a wasteful number, since it uses less digits than its factorization.

2010120211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154624631630.

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

Adding to 2010120211021 its reverse (1201120210102), we get a palindrome (3211240421123).

The spelling of 2010120211021 in words is "two trillion, ten billion, one hundred twenty million, two hundred eleven thousand, twenty-one".