422727221 has 8 divisors (see below), whose sum is σ = 484998720. Its totient is φ = 360926208.

The previous prime is 422727211. The next prime is 422727223. The reversal of 422727221 is 122727224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422727221 - 2⁶ = 422727157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422727223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115691 + ... + 119288.

It is an arithmetic number, because the mean of its divisors is an integer number (60624840).

Almost surely, 2^422727221 is an apocalyptic number.

It is an amenable number.

422727221 is a deficient number, since it is larger than the sum of its proper divisors (62271499).

422727221 is a wasteful number, since it uses less digits than its factorization.

422727221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235243.

The product of its digits is 6272, while the sum is 29.

The square root of 422727221 is about 20560.3312473316. The cubic root of 422727221 is about 750.5046801729.

The spelling of 422727221 in words is "four hundred twenty-two million, seven hundred twenty-seven thousand, two hundred twenty-one".