222117680 has 20 divisors (see below), whose sum is σ = 516423792. Its totient is φ = 88847040.

The previous prime is 222117673. The next prime is 222117683. The reversal of 222117680 is 86711222.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (222117683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388156 + ... + 1388315.

Almost surely, 2^222117680 is an apocalyptic number.

222117680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222117680 is an abundant number, since it is smaller than the sum of its proper divisors (294306112).

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

222117680 is a wasteful number, since it uses less digits than its factorization.

222117680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776484 (or 2776478 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 222117680 is about 14903.6129847765. The cubic root of 222117680 is about 605.6118664665.

The spelling of 222117680 in words is "two hundred twenty-two million, one hundred seventeen thousand, six hundred eighty".