22012461 has 6 divisors (see below), whose sum is σ = 31795790. Its totient is φ = 14674968.

The previous prime is 22012453. The next prime is 22012483. The reversal of 22012461 is 16421022.

22012461 is a `hidden beast` number, since 2 + 201 + 2 + 461 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16281225 + 5731236 = 4035^2 + 2394^2 .

It is not a de Polignac number, because 22012461 - 2³ = 22012453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012411) 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, 1222906 + ... + 1222923.

Almost surely, 2^22012461 is an apocalyptic number.

It is an amenable number.

22012461 is a deficient number, since it is larger than the sum of its proper divisors (9783329).

22012461 is a wasteful number, since it uses less digits than its factorization.

22012461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445835 (or 2445832 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22012461 is about 4691.7439188430. The cubic root of 22012461 is about 280.2568264320.

Adding to 22012461 its reverse (16421022), we get a palindrome (38433483).

The spelling of 22012461 in words is "twenty-two million, twelve thousand, four hundred sixty-one".