202413044021 has 2 divisors, whose sum is σ = 202413044022. Its totient is φ = 202413044020.

The previous prime is 202413043993. The next prime is 202413044027. The reversal of 202413044021 is 120440314202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195001728100 + 7411315921 = 441590^2 + 86089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202413044021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202413044027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101206522010 + 101206522011.

It is an arithmetic number, because the mean of its divisors is an integer number (101206522011).

Almost surely, 2^202413044021 is an apocalyptic number.

It is an amenable number.

202413044021 is a deficient number, since it is larger than the sum of its proper divisors (1).

202413044021 is an equidigital number, since it uses as much as digits as its factorization.

202413044021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 202413044021 its reverse (120440314202), we get a palindrome (322853358223).

The spelling of 202413044021 in words is "two hundred two billion, four hundred thirteen million, forty-four thousand, twenty-one".