221220423122422 has 8 divisors (see below), whose sum is σ = 349295404930200. Its totient is φ = 104788621479024.

The previous prime is 221220423122389. The next prime is 221220423122453. The reversal of 221220423122422 is 224221324022122.

It is a happy number.

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

It is a congruent 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, 2910795041047 + ... + 2910795041122.

It is an arithmetic number, because the mean of its divisors is an integer number (43661925616275).

Almost surely, 2^{221220423122422} is an apocalyptic number.

221220423122422 is a deficient number, since it is larger than the sum of its proper divisors (128074981807778).

221220423122422 is a wasteful number, since it uses less digits than its factorization.

221220423122422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821590082190.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 221220423122422 its reverse (224221324022122), we get a palindrome (445441747144544).

The spelling of 221220423122422 in words is "two hundred twenty-one trillion, two hundred twenty billion, four hundred twenty-three million, one hundred twenty-two thousand, four hundred twenty-two".