22120356 has 24 divisors (see below), whose sum is σ = 51751840. Its totient is φ = 7353792.

The previous prime is 22120337. The next prime is 22120367. The reversal of 22120356 is 65302122.

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 7 ways as a sum of consecutive naturals, for example, 2655 + ... + 7161.

Almost surely, 2^22120356 is an apocalyptic number.

It is an amenable number.

22120356 is an abundant number, since it is smaller than the sum of its proper divisors (29631484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22120356 is a wasteful number, since it uses less digits than its factorization.

22120356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4921 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 22120356 is about 4703.2282530194. The cubic root of 22120356 is about 280.7139771886.

Adding to 22120356 its reverse (65302122), we get a palindrome (87422478).

The spelling of 22120356 in words is "twenty-two million, one hundred twenty thousand, three hundred fifty-six".