22180899 has 16 divisors (see below), whose sum is σ = 31987872. Its totient is φ = 13590528.

The previous prime is 22180889. The next prime is 22180927. The reversal of 22180899 is 99808122.

It is not a de Polignac number, because 22180899 - 2¹⁵ = 22148131 is a prime.

It is a super-3 number, since 3×22180899³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (22180859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8917 + ... + 11129.

It is an arithmetic number, because the mean of its divisors is an integer number (1999242).

Almost surely, 2^22180899 is an apocalyptic number.

22180899 is a deficient number, since it is larger than the sum of its proper divisors (9806973).

22180899 is a wasteful number, since it uses less digits than its factorization.

22180899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 22180899 is about 4709.6601788239. The cubic root of 22180899 is about 280.9698468593.

The spelling of 22180899 in words is "twenty-two million, one hundred eighty thousand, eight hundred ninety-nine".