23221412 has 18 divisors (see below), whose sum is σ = 41127282. Its totient is φ = 11472384.

The previous prime is 23221411. The next prime is 23221417. The reversal of 23221412 is 21412232.

It can be written as a sum of positive squares in 3 ways, for example, as 27556 + 23193856 = 166^2 + 4816^2 .

It is not an unprimeable number, because it can be changed into a prime (23221411) 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, 37328 + ... + 37944.

It is an arithmetic number, because the mean of its divisors is an integer number (2284849).

Almost surely, 2^23221412 is an apocalyptic number.

It is an amenable number.

23221412 is a deficient number, since it is larger than the sum of its proper divisors (17905870).

23221412 is an equidigital number, since it uses as much as digits as its factorization.

23221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 716 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 23221412 is about 4818.8600311692. The cubic root of 23221412 is about 285.2963450806.

Adding to 23221412 its reverse (21412232), we get a palindrome (44633644).

The spelling of 23221412 in words is "twenty-three million, two hundred twenty-one thousand, four hundred twelve".