222211320 has 32 divisors (see below), whose sum is σ = 666634320. Its totient is φ = 59256320.

The previous prime is 222211309. The next prime is 222211321. The reversal of 222211320 is 23112222.

It is a happy number.

It is a super-2 number, since 2×222211320² = 98755741472284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222211320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222211321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925761 + ... + 926000.

Almost surely, 2^222211320 is an apocalyptic number.

222211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222211320 is an abundant number, since it is smaller than the sum of its proper divisors (444423000).

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

222211320 is a wasteful number, since it uses less digits than its factorization.

222211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851775 (or 1851771 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222211320 is about 14906.7541738636. The cubic root of 222211320 is about 605.6969587891.

Adding to 222211320 its reverse (23112222), we get a palindrome (245323542).

The spelling of 222211320 in words is "two hundred twenty-two million, two hundred eleven thousand, three hundred twenty".