22210345 has 4 divisors (see below), whose sum is σ = 26652420. Its totient is φ = 17768272.

The previous prime is 22210337. The next prime is 22210351. The reversal of 22210345 is 54301222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2920681 + 19289664 = 1709^2 + 4392^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210345 - 2³ = 22210337 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2221030 + ... + 2221039.

It is an arithmetic number, because the mean of its divisors is an integer number (6663105).

Almost surely, 2^22210345 is an apocalyptic number.

It is an amenable number.

22210345 is a deficient number, since it is larger than the sum of its proper divisors (4442075).

22210345 is an equidigital number, since it uses as much as digits as its factorization.

22210345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442074.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22210345 is about 4712.7852698802. The cubic root of 22210345 is about 281.0941246550.

Adding to 22210345 its reverse (54301222), we get a palindrome (76511567).

The spelling of 22210345 in words is "twenty-two million, two hundred ten thousand, three hundred forty-five".