202120104401 has 8 divisors (see below), whose sum is σ = 205035912360. Its totient is φ = 199218625408.

The previous prime is 202120104397. The next prime is 202120104517. The reversal of 202120104401 is 104401021202.

It can be written as a sum of positive squares in 4 ways, for example, as 7590591376 + 194529513025 = 87124^2 + 441055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202120104401 - 2² = 202120104397 is a prime.

It is a super-2 number, since 2×202120104401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202120104401.

It is not an unprimeable number, because it can be changed into a prime (202120104001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3553826 + ... + 3610251.

It is an arithmetic number, because the mean of its divisors is an integer number (25629489045).

Almost surely, 2^202120104401 is an apocalyptic number.

It is an amenable number.

202120104401 is a deficient number, since it is larger than the sum of its proper divisors (2915807959).

202120104401 is an equidigital number, since it uses as much as digits as its factorization.

202120104401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164483.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202120104401 its reverse (104401021202), we get a palindrome (306521125603).

The spelling of 202120104401 in words is "two hundred two billion, one hundred twenty million, one hundred four thousand, four hundred one".