22032021 has 16 divisors (see below), whose sum is σ = 32155200. Its totient is φ = 13307520.

The previous prime is 22032019. The next prime is 22032089. The reversal of 22032021 is 12023022.

It is not a de Polignac number, because 22032021 - 2¹ = 22032019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22031988 and 22032006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22032011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10561 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (2009700).

Almost surely, 2^22032021 is an apocalyptic number.

It is an amenable number.

22032021 is a deficient number, since it is larger than the sum of its proper divisors (10123179).

22032021 is a wasteful number, since it uses less digits than its factorization.

22032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22032021 is about 4693.8279687266. The cubic root of 22032021 is about 280.3398127707.

Adding to 22032021 its reverse (12023022), we get a palindrome (34055043).

It can be divided in two parts, 2203 and 2021, that added together give a palindrome (4224).

The spelling of 22032021 in words is "twenty-two million, thirty-two thousand, twenty-one".