222512022 has 20 divisors (see below), whose sum is σ = 498592116. Its totient is φ = 74170620.

The previous prime is 222512011. The next prime is 222512027. The reversal of 222512022 is 220215222.

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 = 222511986 and 222512004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222512027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 686604 + ... + 686927.

Almost surely, 2^222512022 is an apocalyptic number.

222512022 is an abundant number, since it is smaller than the sum of its proper divisors (276080094).

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

222512022 is a wasteful number, since it uses less digits than its factorization.

222512022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373545 (or 1373536 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 222512022 is about 14916.8368630886. The cubic root of 222512022 is about 605.9700504756.

Adding to 222512022 its reverse (220215222), we get a palindrome (442727244).

The spelling of 222512022 in words is "two hundred twenty-two million, five hundred twelve thousand, twenty-two".