202002110002021 has 4 divisors (see below), whose sum is σ = 230859554288032. Its totient is φ = 173144665716012.

The previous prime is 202002110001973. The next prime is 202002110002039. The reversal of 202002110002021 is 120200011200202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202002110002021 - 2¹⁹ = 202002109477733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202002110001992 and 202002110002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002110002051) 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, 14428722142995 + ... + 14428722143008.

It is an arithmetic number, because the mean of its divisors is an integer number (57714888572008).

Almost surely, 2^{202002110002021} is an apocalyptic number.

It is an amenable number.

202002110002021 is a deficient number, since it is larger than the sum of its proper divisors (28857444286011).

202002110002021 is an equidigital number, since it uses as much as digits as its factorization.

202002110002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28857444286010.

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

Adding to 202002110002021 its reverse (120200011200202), we get a palindrome (322202121202223).

The spelling of 202002110002021 in words is "two hundred two trillion, two billion, one hundred ten million, two thousand, twenty-one".