222999971 has 8 divisors (see below), whose sum is σ = 225492000. Its totient is φ = 220521600.

The previous prime is 222999923. The next prime is 222999989. The reversal of 222999971 is 179999222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222999971 - 2¹⁰ = 222998947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222999871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31355 + ... + 37803.

It is an arithmetic number, because the mean of its divisors is an integer number (28186500).

Almost surely, 2^222999971 is an apocalyptic number.

222999971 is a deficient number, since it is larger than the sum of its proper divisors (2492029).

222999971 is a wasteful number, since it uses less digits than its factorization.

222999971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829.

The product of its digits is 367416, while the sum is 50.

The square root of 222999971 is about 14933.1835520762. The cubic root of 222999971 is about 606.4126731637.

The spelling of 222999971 in words is "two hundred twenty-two million, nine hundred ninety-nine thousand, nine hundred seventy-one".