422022221 has 8 divisors (see below), whose sum is σ = 429883200. Its totient is φ = 414184960.

The previous prime is 422022203. The next prime is 422022233. The reversal of 422022221 is 122220224.

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 422022221 - 2⁶ = 422022157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422022121) 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, 32240 + ... + 43398.

It is an arithmetic number, because the mean of its divisors is an integer number (53735400).

Almost surely, 2^422022221 is an apocalyptic number.

It is an amenable number.

422022221 is a deficient number, since it is larger than the sum of its proper divisors (7860979).

422022221 is a wasteful number, since it uses less digits than its factorization.

422022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11859.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 422022221 is about 20543.1794277322. The cubic root of 422022221 is about 750.0872319278.

Adding to 422022221 its reverse (122220224), we get a palindrome (544242445).

The spelling of 422022221 in words is "four hundred twenty-two million, twenty-two thousand, two hundred twenty-one".