222176387328 has 144 divisors (see below), whose sum is σ = 676447900800. Its totient is φ = 63416844288.

The previous prime is 222176387309. The next prime is 222176387333. The reversal of 222176387328 is 823783671222.

It is a super-2 number, since 2×222176387328² (a number of 23 digits) 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 15 ways as a sum of consecutive naturals, for example, 5619726 + ... + 5659122.

Almost surely, 2^222176387328 is an apocalyptic number.

222176387328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222176387328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338223950400).

222176387328 is an abundant number, since it is smaller than the sum of its proper divisors (454271513472).

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

222176387328 is a wasteful number, since it uses less digits than its factorization.

222176387328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40472 (or 40458 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The spelling of 222176387328 in words is "two hundred twenty-two billion, one hundred seventy-six million, three hundred eighty-seven thousand, three hundred twenty-eight".