22011389 has 4 divisors (see below), whose sum is σ = 22056000. Its totient is φ = 21966780.

The previous prime is 22011373. The next prime is 22011403. The reversal of 22011389 is 98311022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22011389 - 2⁴ = 22011373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21557 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (5514000).

Almost surely, 2^22011389 is an apocalyptic number.

It is an amenable number.

22011389 is a deficient number, since it is larger than the sum of its proper divisors (44611).

22011389 is an equidigital number, since it uses as much as digits as its factorization.

22011389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44610.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 22011389 is about 4691.6296742177. The cubic root of 22011389 is about 280.2522768848.

The spelling of 22011389 in words is "twenty-two million, eleven thousand, three hundred eighty-nine".