22256899 has 4 divisors (see below), whose sum is σ = 25436464. Its totient is φ = 19077336.

The previous prime is 22256879. The next prime is 22256933. The reversal of 22256899 is 99865222.

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

It is a cyclic number.

It is not a de Polignac number, because 22256899 - 2¹¹ = 22254851 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22256849) 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, 1589772 + ... + 1589785.

It is an arithmetic number, because the mean of its divisors is an integer number (6359116).

Almost surely, 2^22256899 is an apocalyptic number.

22256899 is a deficient number, since it is larger than the sum of its proper divisors (3179565).

22256899 is an equidigital number, since it uses as much as digits as its factorization.

22256899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179564.

The product of its digits is 155520, while the sum is 43.

The square root of 22256899 is about 4717.7218018870. The cubic root of 22256899 is about 281.2903834029.

It can be divided in two parts, 222 and 56899, that added together give a square (57121 = 239²).

The spelling of 22256899 in words is "twenty-two million, two hundred fifty-six thousand, eight hundred ninety-nine".