22480021 has 4 divisors (see below), whose sum is σ = 23663200. Its totient is φ = 21296844.

The previous prime is 22480009. The next prime is 22480033. The reversal of 22480021 is 12008422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (22480009) and next prime (22480033).

It is a cyclic number.

It is not a de Polignac number, because 22480021 - 2⁷ = 22479893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1183159 = 22480021 / (2 + 2 + 4 + 8 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22460021) 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 3 ways as a sum of consecutive naturals, for example, 591561 + ... + 591598.

It is an arithmetic number, because the mean of its divisors is an integer number (5915800).

Almost surely, 2^22480021 is an apocalyptic number.

It is an amenable number.

22480021 is a deficient number, since it is larger than the sum of its proper divisors (1183179).

22480021 is a wasteful number, since it uses less digits than its factorization.

22480021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183178.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 22480021 is about 4741.3100510302. The cubic root of 22480021 is about 282.2272241027.

Adding to 22480021 its reverse (12008422), we get a palindrome (34488443).

The spelling of 22480021 in words is "twenty-two million, four hundred eighty thousand, twenty-one".