22012433 has 4 divisors (see below), whose sum is σ = 23307300. Its totient is φ = 20717568.

The previous prime is 22012429. The next prime is 22012451. The reversal of 22012433 is 33421022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 10061584 = 3457^2 + 3172^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012433 - 2² = 22012429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1294849 = 22012433 / (2 + 2 + 0 + 1 + 2 + 4 + 3 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647408 + ... + 647441.

It is an arithmetic number, because the mean of its divisors is an integer number (5826825).

Almost surely, 2^22012433 is an apocalyptic number.

It is an amenable number.

22012433 is a deficient number, since it is larger than the sum of its proper divisors (1294867).

22012433 is a wasteful number, since it uses less digits than its factorization.

22012433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294866.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22012433 is about 4691.7409348769. The cubic root of 22012433 is about 280.2567076025.

Adding to 22012433 its reverse (33421022), we get a palindrome (55433455).

The spelling of 22012433 in words is "twenty-two million, twelve thousand, four hundred thirty-three".