21233022 has 16 divisors (see below), whose sum is σ = 42596112. Its totient is φ = 7056000.

The previous prime is 21233011. The next prime is 21233027. The reversal of 21233022 is 22033212.

It is a junction number, because it is equal to n+sod(n) for n = 21232992 and 21233010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3229 + ... + 7272.

It is an arithmetic number, because the mean of its divisors is an integer number (2662257).

Almost surely, 2^21233022 is an apocalyptic number.

21233022 is an abundant number, since it is smaller than the sum of its proper divisors (21363090).

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

21233022 is a wasteful number, since it uses less digits than its factorization.

21233022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 21233022 is about 4607.9303380151. The cubic root of 21233022 is about 276.9091266596.

Adding to 21233022 its reverse (22033212), we get a palindrome (43266234).

The spelling of 21233022 in words is "twenty-one million, two hundred thirty-three thousand, twenty-two".