22127012 has 18 divisors (see below), whose sum is σ = 40482918. Its totient is φ = 10581472.

The previous prime is 22127011. The next prime is 22127057. The reversal of 22127012 is 21072122.

It can be written as a sum of positive squares in only one way, i.e., 21585316 + 541696 = 4646^2 + 736^2 .

It is not an unprimeable number, because it can be changed into a prime (22127011) 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, 3113 + ... + 7344.

It is an arithmetic number, because the mean of its divisors is an integer number (2249051).

Almost surely, 2^22127012 is an apocalyptic number.

It is an amenable number.

22127012 is a deficient number, since it is larger than the sum of its proper divisors (18355906).

22127012 is a wasteful number, since it uses less digits than its factorization.

22127012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10507 (or 10482 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22127012 is about 4703.9357988816. The cubic root of 22127012 is about 280.7421299130.

Adding to 22127012 its reverse (21072122), we get a palindrome (43199134).

The spelling of 22127012 in words is "twenty-two million, one hundred twenty-seven thousand, twelve".