220266401 has 2 divisors, whose sum is σ = 220266402. Its totient is φ = 220266400.

The previous prime is 220266349. The next prime is 220266407. The reversal of 220266401 is 104662022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142826401 + 77440000 = 11951^2 + 8800^2 .

It is a cyclic number.

It is not a de Polignac number, because 220266401 - 2⁶ = 220266337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220266407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110133200 + 110133201.

It is an arithmetic number, because the mean of its divisors is an integer number (110133201).

Almost surely, 2^220266401 is an apocalyptic number.

It is an amenable number.

220266401 is a deficient number, since it is larger than the sum of its proper divisors (1).

220266401 is an equidigital number, since it uses as much as digits as its factorization.

220266401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 220266401 is about 14841.3746330992. The cubic root of 220266401 is about 603.9246439401.

The spelling of 220266401 in words is "two hundred twenty million, two hundred sixty-six thousand, four hundred one".