22152412 has 6 divisors (see below), whose sum is σ = 38766728. Its totient is φ = 11076204.

The previous prime is 22152401. The next prime is 22152413. The reversal of 22152412 is 21425122.

It is a self number, because there is not a number n which added to its sum of digits gives 22152412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769048 + ... + 2769055.

Almost surely, 2^22152412 is an apocalyptic number.

It is an amenable number.

22152412 is a deficient number, since it is larger than the sum of its proper divisors (16614316).

22152412 is a wasteful number, since it uses less digits than its factorization.

22152412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538107 (or 5538105 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 22152412 is about 4706.6348912997. The cubic root of 22152412 is about 280.8495118360.

Adding to 22152412 its reverse (21425122), we get a palindrome (43577534).

The spelling of 22152412 in words is "twenty-two million, one hundred fifty-two thousand, four hundred twelve".