22212449 has 4 divisors (see below), whose sum is σ = 25385664. Its totient is φ = 19039236.

The previous prime is 22212439. The next prime is 22212527. The reversal of 22212449 is 94421222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22212449 - 2⁴ = 22212433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22212409) 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, 1586597 + ... + 1586610.

It is an arithmetic number, because the mean of its divisors is an integer number (6346416).

Almost surely, 2^22212449 is an apocalyptic number.

It is an amenable number.

22212449 is a deficient number, since it is larger than the sum of its proper divisors (3173215).

22212449 is an equidigital number, since it uses as much as digits as its factorization.

22212449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173214.

The product of its digits is 2304, while the sum is 26.

The square root of 22212449 is about 4713.0084871555. The cubic root of 22212449 is about 281.1030004493.

The spelling of 22212449 in words is "twenty-two million, two hundred twelve thousand, four hundred forty-nine".