220401355308401 has 2 divisors, whose sum is σ = 220401355308402. Its totient is φ = 220401355308400.

The previous prime is 220401355308377. The next prime is 220401355308413. The reversal of 220401355308401 is 104803553104022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190220615618401 + 30180739690000 = 13792049^2 + 5493700^2 .

It is a cyclic number.

It is not a de Polignac number, because 220401355308401 - 2¹⁰ = 220401355307377 is a prime.

It is not a weakly prime, because it can be changed into another prime (220401355308451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110200677654200 + 110200677654201.

It is an arithmetic number, because the mean of its divisors is an integer number (110200677654201).

Almost surely, 2^{220401355308401} is an apocalyptic number.

It is an amenable number.

220401355308401 is a deficient number, since it is larger than the sum of its proper divisors (1).

220401355308401 is an equidigital number, since it uses as much as digits as its factorization.

220401355308401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 220401355308401 in words is "two hundred twenty trillion, four hundred one billion, three hundred fifty-five million, three hundred eight thousand, four hundred one".