222213444 has 24 divisors (see below), whose sum is σ = 519317568. Its totient is φ = 73954080.

The previous prime is 222213437. The next prime is 222213451. The reversal of 222213444 is 444312222.

It is an interprime number because it is at equal distance from previous prime (222213437) and next prime (222213451).

It is a super-2 number, since 2×222213444² = 98757629388682272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6547 + ... + 22074.

It is an arithmetic number, because the mean of its divisors is an integer number (21638232).

Almost surely, 2^222213444 is an apocalyptic number.

It is an amenable number.

222213444 is an abundant number, since it is smaller than the sum of its proper divisors (297104124).

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

222213444 is a wasteful number, since it uses less digits than its factorization.

222213444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29275 (or 29273 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 222213444 is about 14906.8254165667. The cubic root of 222213444 is about 605.6988886282.

Adding to 222213444 its reverse (444312222), we get a palindrome (666525666).

The spelling of 222213444 in words is "two hundred twenty-two million, two hundred thirteen thousand, four hundred forty-four".