1422425221 has 8 divisors (see below), whose sum is σ = 1647898304. Its totient is φ = 1202519520.

The previous prime is 1422425201. The next prime is 1422425227. The reversal of 1422425221 is 1225242241.

It is a happy number.

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 1422425221 - 2⁵ = 1422425189 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 (1422425227) 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, 1391295 + ... + 1392316.

It is an arithmetic number, because the mean of its divisors is an integer number (205987288).

Almost surely, 2^1422425221 is an apocalyptic number.

It is an amenable number.

1422425221 is a deficient number, since it is larger than the sum of its proper divisors (225473083).

1422425221 is an equidigital number, since it uses as much as digits as its factorization.

1422425221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783691.

The product of its digits is 2560, while the sum is 25.

The square root of 1422425221 is about 37715.0529762322. The cubic root of 1422425221 is about 1124.6303894611.

Adding to 1422425221 its reverse (1225242241), we get a palindrome (2647667462).

The spelling of 1422425221 in words is "one billion, four hundred twenty-two million, four hundred twenty-five thousand, two hundred twenty-one".