222042220 has 24 divisors (see below), whose sum is σ = 466570944. Its totient is φ = 88763136.

The previous prime is 222042211. The next prime is 222042229. The reversal of 222042220 is 22240222.

It is an interprime number because it is at equal distance from previous prime (222042211) and next prime (222042229).

It is a junction number, because it is equal to n+sod(n) for n = 222042194 and 222042203.

It is not an unprimeable number, because it can be changed into a prime (222042229) 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 7 ways as a sum of consecutive naturals, for example, 56644 + ... + 60436.

It is an arithmetic number, because the mean of its divisors is an integer number (19440456).

Almost surely, 2^222042220 is an apocalyptic number.

222042220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222042220 is an abundant number, since it is smaller than the sum of its proper divisors (244528724).

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

222042220 is a wasteful number, since it uses less digits than its factorization.

222042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729 (or 6727 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 222042220 is about 14901.0811688280. The cubic root of 222042220 is about 605.5432772280.

Adding to 222042220 its reverse (22240222), we get a palindrome (244282442).

The spelling of 222042220 in words is "two hundred twenty-two million, forty-two thousand, two hundred twenty".