22663021 has 8 divisors (see below), whose sum is σ = 23585760. Its totient is φ = 21758352.

The previous prime is 22663019. The next prime is 22663033. The reversal of 22663021 is 12036622.

It is a happy number.

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 22663021 - 2¹ = 22663019 is a prime.

It is a super-2 number, since 2×22663021² = 1027225041692882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22662983 and 22663001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22663001) 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, 1930 + ... + 7003.

It is an arithmetic number, because the mean of its divisors is an integer number (2948220).

Almost surely, 2^22663021 is an apocalyptic number.

It is an amenable number.

22663021 is a deficient number, since it is larger than the sum of its proper divisors (922739).

22663021 is an equidigital number, since it uses as much as digits as its factorization.

22663021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22663021 is about 4760.5693987169. The cubic root of 22663021 is about 282.9909847420.

Adding to 22663021 its reverse (12036622), we get a palindrome (34699643).

The spelling of 22663021 in words is "twenty-two million, six hundred sixty-three thousand, twenty-one".