222046220 has 24 divisors (see below), whose sum is σ = 508688208. Its totient is φ = 80744000.

The previous prime is 222046193. The next prime is 222046249. The reversal of 222046220 is 22640222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222046192 and 222046201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504431 + ... + 504870.

It is an arithmetic number, because the mean of its divisors is an integer number (21195342).

Almost surely, 2^222046220 is an apocalyptic number.

222046220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222046220 is an abundant number, since it is smaller than the sum of its proper divisors (286641988).

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

222046220 is a wasteful number, since it uses less digits than its factorization.

222046220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009321 (or 1009319 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 222046220 is about 14901.2153866723. The cubic root of 222046220 is about 605.5469134112.

Adding to 222046220 its reverse (22640222), we get a palindrome (244686442).

The spelling of 222046220 in words is "two hundred twenty-two million, forty-six thousand, two hundred twenty".