22697021 has 16 divisors (see below), whose sum is σ = 24624000. Its totient is φ = 20864448.

The previous prime is 22697011. The next prime is 22697027. The reversal of 22697021 is 12079622.

It is not a de Polignac number, because 22697021 - 2¹⁰ = 22695997 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 (22697027) 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 15 ways as a sum of consecutive naturals, for example, 126710 + ... + 126888.

It is an arithmetic number, because the mean of its divisors is an integer number (1539000).

Almost surely, 2^22697021 is an apocalyptic number.

It is an amenable number.

22697021 is a deficient number, since it is larger than the sum of its proper divisors (1926979).

22697021 is a wasteful number, since it uses less digits than its factorization.

22697021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 22697021 is about 4764.1390617823. The cubic root of 22697021 is about 283.1324322843.

The spelling of 22697021 in words is "twenty-two million, six hundred ninety-seven thousand, twenty-one".