221422319 has 4 divisors (see below), whose sum is σ = 227406744. Its totient is φ = 215437896.

The previous prime is 221422309. The next prime is 221422349. The reversal of 221422319 is 913224122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221422319 - 2²⁰ = 220373743 is a prime.

It is a super-2 number, since 2×221422319² = 98055686702675522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422309) 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, 2992157 + ... + 2992230.

It is an arithmetic number, because the mean of its divisors is an integer number (56851686).

Almost surely, 2^221422319 is an apocalyptic number.

221422319 is a deficient number, since it is larger than the sum of its proper divisors (5984425).

221422319 is an equidigital number, since it uses as much as digits as its factorization.

221422319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984424.

The product of its digits is 1728, while the sum is 26.

The square root of 221422319 is about 14880.2660930509. The cubic root of 221422319 is about 604.9792302138.

The spelling of 221422319 in words is "two hundred twenty-one million, four hundred twenty-two thousand, three hundred nineteen".