222220012320 has 144 divisors (see below), whose sum is σ = 758452548672. Its totient is φ = 59248765440.

The previous prime is 222220012291. The next prime is 222220012349. The reversal of 222220012320 is 23210022222.

It is an interprime number because it is at equal distance from previous prime (222220012291) and next prime (222220012349).

It is a tau number, because it is divible by the number of its divisors (144).

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 = 222220012293 and 222220012302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13572459 + ... + 13588821.

It is an arithmetic number, because the mean of its divisors is an integer number (5267031588).

Almost surely, 2^222220012320 is an apocalyptic number.

222220012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220012320 is an abundant number, since it is smaller than the sum of its proper divisors (536232536352).

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

222220012320 is a wasteful number, since it uses less digits than its factorization.

222220012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25815 (or 25804 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 222220012320 its reverse (23210022222), we get a palindrome (245430034542).

The spelling of 222220012320 in words is "two hundred twenty-two billion, two hundred twenty million, twelve thousand, three hundred twenty".