2010202102021 has 4 divisors (see below), whose sum is σ = 2010212362252. Its totient is φ = 2010191841792.

The previous prime is 2010202102019. The next prime is 2010202102043. The reversal of 2010202102021 is 1202012020102.

It is a happy number.

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 1755389157921 + 254812944100 = 1324911^2 + 504790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010202102021 - 2¹ = 2010202102019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010202101992 and 2010202102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010202102061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4830396 + ... + 5230021.

It is an arithmetic number, because the mean of its divisors is an integer number (502553090563).

Almost surely, 2^{2010202102021} is an apocalyptic number.

It is an amenable number.

2010202102021 is a deficient number, since it is larger than the sum of its proper divisors (10260231).

2010202102021 is a wasteful number, since it uses less digits than its factorization.

2010202102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260230.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2010202102021 its reverse (1202012020102), we get a palindrome (3212214122123).

The spelling of 2010202102021 in words is "two trillion, ten billion, two hundred two million, one hundred two thousand, twenty-one".