221134422 has 32 divisors (see below), whose sum is σ = 455139072. Its totient is φ = 71574624.

The previous prime is 221134421. The next prime is 221134457. The reversal of 221134422 is 224431122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221134421) 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, 196353 + ... + 197475.

It is an arithmetic number, because the mean of its divisors is an integer number (14223096).

Almost surely, 2^221134422 is an apocalyptic number.

221134422 is an abundant number, since it is smaller than the sum of its proper divisors (234004650).

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

221134422 is a wasteful number, since it uses less digits than its factorization.

221134422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

The product of its digits is 768, while the sum is 21.

The square root of 221134422 is about 14870.5891611597. The cubic root of 221134422 is about 604.7169151232.

Adding to 221134422 its reverse (224431122), we get a palindrome (445565544).

The spelling of 221134422 in words is "two hundred twenty-one million, one hundred thirty-four thousand, four hundred twenty-two".