202210010020021 has 4 divisors (see below), whose sum is σ = 202215647514700. Its totient is φ = 202204372525344.

The previous prime is 202210010020019. The next prime is 202210010020027. The reversal of 202210010020021 is 120020010012202.

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 139714882211025 + 62495127808996 = 11820105^2 + 7905386^2 .

It is a cyclic number.

It is not a de Polignac number, because 202210010020021 - 2¹ = 202210010020019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202210010019983 and 202210010020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210010020027) 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, 2818693536 + ... + 2818765273.

It is an arithmetic number, because the mean of its divisors is an integer number (50553911878675).

Almost surely, 2^{202210010020021} is an apocalyptic number.

It is an amenable number.

202210010020021 is a deficient number, since it is larger than the sum of its proper divisors (5637494679).

202210010020021 is an equidigital number, since it uses as much as digits as its factorization.

202210010020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637494678.

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

Adding to 202210010020021 its reverse (120020010012202), we get a palindrome (322230020032223).

The spelling of 202210010020021 in words is "two hundred two trillion, two hundred ten billion, ten million, twenty thousand, twenty-one".