220401355304399 has 2 divisors, whose sum is σ = 220401355304400. Its totient is φ = 220401355304398.

The previous prime is 220401355304327. The next prime is 220401355304401. The reversal of 220401355304399 is 993403553104022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220401355304399 is a prime.

Together with 220401355304401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220401355304899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110200677652199 + 110200677652200.

It is an arithmetic number, because the mean of its divisors is an integer number (110200677652200).

Almost surely, 2^{220401355304399} is an apocalyptic number.

220401355304399 is a deficient number, since it is larger than the sum of its proper divisors (1).

220401355304399 is an equidigital number, since it uses as much as digits as its factorization.

220401355304399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 220401355304399 in words is "two hundred twenty trillion, four hundred one billion, three hundred fifty-five million, three hundred four thousand, three hundred ninety-nine".