222220422 has 20 divisors (see below), whose sum is σ = 497938716. Its totient is φ = 74073420.

The previous prime is 222220357. The next prime is 222220429. The reversal of 222220422 is 224022222.

It is a happy number.

222220422 is a `hidden beast` number, since 2 + 22 + 220 + 422 = 666.

222220422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222220395 and 222220404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220429) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 685704 + ... + 686027.

Almost surely, 2^222220422 is an apocalyptic number.

222220422 is an abundant number, since it is smaller than the sum of its proper divisors (275718294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222220422 is a wasteful number, since it uses less digits than its factorization.

222220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371745 (or 1371736 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 222220422 is about 14907.0594685874. The cubic root of 222220422 is about 605.7052286625.

Adding to 222220422 its reverse (224022222), we get a palindrome (446242644).

The spelling of 222220422 in words is "two hundred twenty-two million, two hundred twenty thousand, four hundred twenty-two".