422221355 has 4 divisors (see below), whose sum is σ = 506665632. Its totient is φ = 337777080.

The previous prime is 422221301. The next prime is 422221381. The reversal of 422221355 is 553122224.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 422221355 - 2⁶ = 422221291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42222131 + ... + 42222140.

It is an arithmetic number, because the mean of its divisors is an integer number (126666408).

Almost surely, 2^422221355 is an apocalyptic number.

422221355 is a deficient number, since it is larger than the sum of its proper divisors (84444277).

422221355 is an equidigital number, since it uses as much as digits as its factorization.

422221355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84444276.

The product of its digits is 4800, while the sum is 26.

The square root of 422221355 is about 20548.0255742492. The cubic root of 422221355 is about 750.2051912643.

Adding to 422221355 its reverse (553122224), we get a palindrome (975343579).

The spelling of 422221355 in words is "four hundred twenty-two million, two hundred twenty-one thousand, three hundred fifty-five".