221422999 has 8 divisors (see below), whose sum is σ = 253145088. Its totient is φ = 189723480.

The previous prime is 221422963. The next prime is 221423009. The reversal of 221422999 is 999224122.

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 221422999 - 2¹⁵ = 221390231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422939) 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, 33594 + ... + 39640.

It is an arithmetic number, because the mean of its divisors is an integer number (31643136).

Almost surely, 2^221422999 is an apocalyptic number.

221422999 is a deficient number, since it is larger than the sum of its proper divisors (31722089).

221422999 is an equidigital number, since it uses as much as digits as its factorization.

221422999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285.

The product of its digits is 46656, while the sum is 40.

The square root of 221422999 is about 14880.2889420871. The cubic root of 221422999 is about 604.9798495212.

The spelling of 221422999 in words is "two hundred twenty-one million, four hundred twenty-two thousand, nine hundred ninety-nine".