22221158 has 8 divisors (see below), whose sum is σ = 33524928. Its totient is φ = 11046184.

The previous prime is 22221109. The next prime is 22221161. The reversal of 22221158 is 85112222.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 31766 + ... + 32457.

It is an arithmetic number, because the mean of its divisors is an integer number (4190616).

Almost surely, 2^22221158 is an apocalyptic number.

22221158 is a deficient number, since it is larger than the sum of its proper divisors (11303770).

22221158 is a wasteful number, since it uses less digits than its factorization.

22221158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64398.

The product of its digits is 640, while the sum is 23.

The square root of 22221158 is about 4713.9323287464. The cubic root of 22221158 is about 281.1397336967.

The spelling of 22221158 in words is "twenty-two million, two hundred twenty-one thousand, one hundred fifty-eight".