22221412 has 24 divisors (see below), whose sum is σ = 41811840. Its totient is φ = 10300320.

The previous prime is 22221391. The next prime is 22221449. The reversal of 22221412 is 21412222.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462 + ... + 6682.

It is an arithmetic number, because the mean of its divisors is an integer number (1742160).

Almost surely, 2^22221412 is an apocalyptic number.

It is an amenable number.

22221412 is a deficient number, since it is larger than the sum of its proper divisors (19590428).

22221412 is a wasteful number, since it uses less digits than its factorization.

22221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291 (or 6289 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 22221412 is about 4713.9592700828. The cubic root of 22221412 is about 281.1408048863.

Adding to 22221412 its reverse (21412222), we get a palindrome (43633634).

The spelling of 22221412 in words is "twenty-two million, two hundred twenty-one thousand, four hundred twelve".