202020442001 has 4 divisors (see below), whose sum is σ = 230880505152. Its totient is φ = 173160378852.

The previous prime is 202020441991. The next prime is 202020442073. The reversal of 202020442001 is 100244020202.

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 202020442001 - 2¹⁰ = 202020440977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202020442081) 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, 14430031565 + ... + 14430031578.

It is an arithmetic number, because the mean of its divisors is an integer number (57720126288).

Almost surely, 2^202020442001 is an apocalyptic number.

It is an amenable number.

202020442001 is a deficient number, since it is larger than the sum of its proper divisors (28860063151).

202020442001 is an equidigital number, since it uses as much as digits as its factorization.

202020442001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28860063150.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 202020442001 its reverse (100244020202), we get a palindrome (302264462203).

The spelling of 202020442001 in words is "two hundred two billion, twenty million, four hundred forty-two thousand, one".