22021152 has 48 divisors (see below), whose sum is σ = 60852960. Its totient is φ = 6953472.

The previous prime is 22021151. The next prime is 22021159. The reversal of 22021152 is 25112022.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×22021152² = 969862270814208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22021151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4213 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (1267770).

Almost surely, 2^22021152 is an apocalyptic number.

It is an amenable number.

22021152 is an abundant number, since it is smaller than the sum of its proper divisors (38831808).

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

22021152 is a wasteful number, since it uses less digits than its factorization.

22021152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12105 (or 12097 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22021152 is about 4692.6700288855. The cubic root of 22021152 is about 280.2937054160.

Adding to 22021152 its reverse (25112022), we get a palindrome (47133174).

The spelling of 22021152 in words is "twenty-two million, twenty-one thousand, one hundred fifty-two".