22321147 has 6 divisors (see below), whose sum is σ = 23065404. Its totient is φ = 21600180.

The previous prime is 22321133. The next prime is 22321151. The reversal of 22321147 is 74112322.

It is a de Polignac number, because none of the positive numbers 2^k-22321147 is a prime.

It is a super-3 number, since 3×22321147³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22321127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10653 + ... + 12574.

It is an arithmetic number, because the mean of its divisors is an integer number (3844234).

Almost surely, 2^22321147 is an apocalyptic number.

22321147 is a deficient number, since it is larger than the sum of its proper divisors (744257).

22321147 is an equidigital number, since it uses as much as digits as its factorization.

22321147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23289 (or 23258 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 22321147 is about 4724.5261138023. The cubic root of 22321147 is about 281.5607861942.

Adding to 22321147 its reverse (74112322), we get a palindrome (96433469).

The spelling of 22321147 in words is "twenty-two million, three hundred twenty-one thousand, one hundred forty-seven".