401221159 has 2 divisors, whose sum is σ = 401221160. Its totient is φ = 401221158.

The previous prime is 401221151. The next prime is 401221207. The reversal of 401221159 is 951122104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401221159 - 2³ = 401221151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401221151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200610579 + 200610580.

It is an arithmetic number, because the mean of its divisors is an integer number (200610580).

Almost surely, 2^401221159 is an apocalyptic number.

401221159 is a deficient number, since it is larger than the sum of its proper divisors (1).

401221159 is an equidigital number, since it uses as much as digits as its factorization.

401221159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 401221159 is about 20030.5057100414. The cubic root of 401221159 is about 737.5553360375. Note that the first 3 decimals are identical.

The spelling of 401221159 in words is "four hundred one million, two hundred twenty-one thousand, one hundred fifty-nine".