22232091 has 8 divisors (see below), whose sum is σ = 33877504. Its totient is φ = 12704040.

The previous prime is 22232087. The next prime is 22232117. The reversal of 22232091 is 19023222.

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

It is not a de Polignac number, because 22232091 - 2² = 22232087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1058671 = 22232091 / (2 + 2 + 2 + 3 + 2 + 0 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22232011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529315 + ... + 529356.

It is an arithmetic number, because the mean of its divisors is an integer number (4234688).

Almost surely, 2^22232091 is an apocalyptic number.

22232091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22232091 is a deficient number, since it is larger than the sum of its proper divisors (11645413).

22232091 is a wasteful number, since it uses less digits than its factorization.

22232091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058681.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22232091 is about 4715.0918336762. The cubic root of 22232091 is about 281.1858338557.

The spelling of 22232091 in words is "twenty-two million, two hundred thirty-two thousand, ninety-one".