221422127 has 16 divisors (see below), whose sum is σ = 246177792. Its totient is φ = 198084480.

The previous prime is 221422111. The next prime is 221422129. The reversal of 221422127 is 721224122.

221422127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221422127 - 2⁴ = 221422111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63602 + ... + 66992.

It is an arithmetic number, because the mean of its divisors is an integer number (15386112).

Almost surely, 2^221422127 is an apocalyptic number.

221422127 is a deficient number, since it is larger than the sum of its proper divisors (24755665).

221422127 is a wasteful number, since it uses less digits than its factorization.

221422127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598.

The product of its digits is 896, while the sum is 23.

The square root of 221422127 is about 14880.2596415520. The cubic root of 221422127 is about 604.9790553503.

Adding to 221422127 its reverse (721224122), we get a palindrome (942646249).

The spelling of 221422127 in words is "two hundred twenty-one million, four hundred twenty-two thousand, one hundred twenty-seven".