22221859 has 8 divisors (see below), whose sum is σ = 25078320. Its totient is φ = 19504800.

The previous prime is 22221853. The next prime is 22221889. The reversal of 22221859 is 95812222.

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 22221859 - 2²³ = 13833251 is a prime.

It is a super-2 number, since 2×22221859² = 987622034831762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221859.

It is not an unprimeable number, because it can be changed into a prime (22221853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34512 + ... + 35149.

It is an arithmetic number, because the mean of its divisors is an integer number (3134790).

Almost surely, 2^22221859 is an apocalyptic number.

22221859 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

22221859 is a deficient number, since it is larger than the sum of its proper divisors (2856461).

22221859 is a wasteful number, since it uses less digits than its factorization.

22221859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69701.

The product of its digits is 5760, while the sum is 31.

The square root of 22221859 is about 4714.0066822184. The cubic root of 22221859 is about 281.1426899915.

The spelling of 22221859 in words is "twenty-two million, two hundred twenty-one thousand, eight hundred fifty-nine".