222422421 has 24 divisors (see below), whose sum is σ = 322402080. Its totient is φ = 136334016.

The previous prime is 222422383. The next prime is 222422491. The reversal of 222422421 is 124224222.

222422421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222422421 - 2¹³ = 222414229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222422491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154935 + ... + 156363.

It is an arithmetic number, because the mean of its divisors is an integer number (13433420).

Almost surely, 2^222422421 is an apocalyptic number.

It is an amenable number.

222422421 is a deficient number, since it is larger than the sum of its proper divisors (99979659).

222422421 is a wasteful number, since it uses less digits than its factorization.

222422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1752 counting only the distinct ones).

The product of its digits is 1024, while the sum is 21.

The square root of 222422421 is about 14913.8332094737. The cubic root of 222422421 is about 605.8887023435. Note that the first 3 decimals are identical.

Adding to 222422421 its reverse (124224222), we get a palindrome (346646643).

The spelling of 222422421 in words is "two hundred twenty-two million, four hundred twenty-two thousand, four hundred twenty-one".