220200401 has 2 divisors, whose sum is σ = 220200402. Its totient is φ = 220200400.

The previous prime is 220200397. The next prime is 220200403. The reversal of 220200401 is 104002022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158734801 + 61465600 = 12599^2 + 7840^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200401 - 2² = 220200397 is a prime.

Together with 220200403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220200403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100200 + 110100201.

It is an arithmetic number, because the mean of its divisors is an integer number (110100201).

Almost surely, 2^220200401 is an apocalyptic number.

It is an amenable number.

220200401 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200401 is an equidigital number, since it uses as much as digits as its factorization.

220200401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 220200401 is about 14839.1509528005. The cubic root of 220200401 is about 603.8643184916.

Adding to 220200401 its reverse (104002022), we get a palindrome (324202423).

The spelling of 220200401 in words is "two hundred twenty million, two hundred thousand, four hundred one".