22120549 has 8 divisors (see below), whose sum is σ = 25180992. Its totient is φ = 19235040.

The previous prime is 22120543. The next prime is 22120573. The reversal of 22120549 is 94502122.

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

It is not a de Polignac number, because 22120549 - 2⁵ = 22120517 is a prime.

It is a super-2 number, since 2×22120549² = 978637376122802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120543) 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, 43464 + ... + 43969.

It is an arithmetic number, because the mean of its divisors is an integer number (3147624).

Almost surely, 2^22120549 is an apocalyptic number.

It is an amenable number.

22120549 is a deficient number, since it is larger than the sum of its proper divisors (3060443).

22120549 is a wasteful number, since it uses less digits than its factorization.

22120549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87467.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 22120549 is about 4703.2487707966. The cubic root of 22120549 is about 280.7147935956.

The spelling of 22120549 in words is "twenty-two million, one hundred twenty thousand, five hundred forty-nine".