22221899 has 8 divisors (see below), whose sum is σ = 25425120. Its totient is φ = 19025856.

The previous prime is 22221889. The next prime is 22221911. The reversal of 22221899 is 99812222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22221899 - 2¹⁶ = 22156363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22221889) 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 7 ways as a sum of consecutive naturals, for example, 10277 + ... + 12249.

It is an arithmetic number, because the mean of its divisors is an integer number (3178140).

Almost surely, 2^22221899 is an apocalyptic number.

22221899 is a deficient number, since it is larger than the sum of its proper divisors (3203221).

22221899 is a wasteful number, since it uses less digits than its factorization.

22221899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589.

The product of its digits is 10368, while the sum is 35.

The square root of 22221899 is about 4714.0109248919. The cubic root of 22221899 is about 281.1428586797.

The spelling of 22221899 in words is "twenty-two million, two hundred twenty-one thousand, eight hundred ninety-nine".