22012465 has 4 divisors (see below), whose sum is σ = 26414964. Its totient is φ = 17609968.

The previous prime is 22012453. The next prime is 22012483. The reversal of 22012465 is 56421022.

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 12334144 + 9678321 = 3512^2 + 3111^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012465 - 2⁷ = 22012337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2201242 + ... + 2201251.

It is an arithmetic number, because the mean of its divisors is an integer number (6603741).

Almost surely, 2^22012465 is an apocalyptic number.

It is an amenable number.

22012465 is a deficient number, since it is larger than the sum of its proper divisors (4402499).

22012465 is an equidigital number, since it uses as much as digits as its factorization.

22012465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402498.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 22012465 is about 4691.7443451237. The cubic root of 22012465 is about 280.2568434077.

Adding to 22012465 its reverse (56421022), we get a palindrome (78433487).

The spelling of 22012465 in words is "twenty-two million, twelve thousand, four hundred sixty-five".