221324022 has 32 divisors (see below), whose sum is σ = 495106560. Its totient is φ = 73283400.

The previous prime is 221324021. The next prime is 221324023. The reversal of 221324022 is 220423122.

221324022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221324021) and next prime (221324023).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221323986 and 221324004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221324021) 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, 5418 + ... + 21725.

It is an arithmetic number, because the mean of its divisors is an integer number (15472080).

Almost surely, 2^221324022 is an apocalyptic number.

221324022 is an abundant number, since it is smaller than the sum of its proper divisors (273782538).

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

221324022 is a wasteful number, since it uses less digits than its factorization.

221324022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27305 (or 27299 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 221324022 is about 14876.9627948718. The cubic root of 221324022 is about 604.8896932515.

Adding to 221324022 its reverse (220423122), we get a palindrome (441747144).

The spelling of 221324022 in words is "two hundred twenty-one million, three hundred twenty-four thousand, twenty-two".