22802021 has 8 divisors (see below), whose sum is σ = 25108704. Its totient is φ = 20534320.

The previous prime is 22802011. The next prime is 22802023. The reversal of 22802021 is 12020822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22802021 - 2¹⁰ = 22800997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22802023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8510 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (3138588).

Almost surely, 2^22802021 is an apocalyptic number.

It is an amenable number.

22802021 is a deficient number, since it is larger than the sum of its proper divisors (2306683).

22802021 is a wasteful number, since it uses less digits than its factorization.

22802021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19491.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 22802021 is about 4775.1461757731. The cubic root of 22802021 is about 283.5683658416.

Adding to 22802021 its reverse (12020822), we get a palindrome (34822843).

The spelling of 22802021 in words is "twenty-two million, eight hundred two thousand, twenty-one".