22121832 has 16 divisors (see below), whose sum is σ = 55304640. Its totient is φ = 7373936.

The previous prime is 22121821. The next prime is 22121843. The reversal of 22121832 is 23812122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22121821) and next prime (22121843).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22121799 and 22121808.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 460848 + ... + 460895.

It is an arithmetic number, because the mean of its divisors is an integer number (3456540).

Almost surely, 2^22121832 is an apocalyptic number.

It is an amenable number.

22121832 is an abundant number, since it is smaller than the sum of its proper divisors (33182808).

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

22121832 is a wasteful number, since it uses less digits than its factorization.

22121832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921752 (or 921748 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 22121832 is about 4703.3851639006. The cubic root of 22121832 is about 280.7202206779.

Adding to 22121832 its reverse (23812122), we get a palindrome (45933954).

The spelling of 22121832 in words is "twenty-two million, one hundred twenty-one thousand, eight hundred thirty-two".