22665021 has 8 divisors (see below), whose sum is σ = 30602880. Its totient is φ = 14918592.

The previous prime is 22665011. The next prime is 22665067. The reversal of 22665021 is 12056622.

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

It is not a de Polignac number, because 22665021 - 2⁵ = 22664989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22664982 and 22665000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22665011) 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, 47580 + ... + 48053.

It is an arithmetic number, because the mean of its divisors is an integer number (3825360).

Almost surely, 2^22665021 is an apocalyptic number.

It is an amenable number.

22665021 is a deficient number, since it is larger than the sum of its proper divisors (7937859).

22665021 is an equidigital number, since it uses as much as digits as its factorization.

22665021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95715.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22665021 is about 4760.7794529888. The cubic root of 22665021 is about 282.9993091003. Note that the first 3 decimals are identical.

The spelling of 22665021 in words is "twenty-two million, six hundred sixty-five thousand, twenty-one".