22033212021 has 12 divisors (see below), whose sum is σ = 31992380160. Its totient is φ = 14611902120.

The previous prime is 22033212013. The next prime is 22033212023. The reversal of 22033212021 is 12021233022.

It is not a de Polignac number, because 22033212021 - 2³ = 22033212013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22033211985 and 22033212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22033212023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6407011 + ... + 6410448.

It is an arithmetic number, because the mean of its divisors is an integer number (2666031680).

Almost surely, 2^22033212021 is an apocalyptic number.

It is an amenable number.

22033212021 is a deficient number, since it is larger than the sum of its proper divisors (9959168139).

22033212021 is a wasteful number, since it uses less digits than its factorization.

22033212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12817656 (or 12817653 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22033212021 its reverse (12021233022), we get a palindrome (34054445043).

The spelling of 22033212021 in words is "twenty-two billion, thirty-three million, two hundred twelve thousand, twenty-one".