22221436 has 12 divisors (see below), whose sum is σ = 39380320. Its totient is φ = 10969920.

The previous prime is 22221391. The next prime is 22221449. The reversal of 22221436 is 63412222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34845 + ... + 35476.

Almost surely, 2^22221436 is an apocalyptic number.

It is an amenable number.

22221436 is a deficient number, since it is larger than the sum of its proper divisors (17158884).

22221436 is a wasteful number, since it uses less digits than its factorization.

22221436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70404 (or 70402 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 22221436 is about 4713.9618157130. The cubic root of 22221436 is about 281.1409061006.

Adding to 22221436 its reverse (63412222), we get a palindrome (85633658).

The spelling of 22221436 in words is "twenty-two million, two hundred twenty-one thousand, four hundred thirty-six".