22120305 has 16 divisors (see below), whose sum is σ = 35450880. Its totient is φ = 11778048.

The previous prime is 22120303. The next prime is 22120331. The reversal of 22120305 is 50302122.

It is not a de Polignac number, because 22120305 - 2¹ = 22120303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (22120303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16656 + ... + 17934.

It is an arithmetic number, because the mean of its divisors is an integer number (2215680).

Almost surely, 2^22120305 is an apocalyptic number.

It is an amenable number.

22120305 is a deficient number, since it is larger than the sum of its proper divisors (13330575).

22120305 is a wasteful number, since it uses less digits than its factorization.

22120305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 22120305 is about 4703.2228312084. Note that the first 3 decimals coincide. The cubic root of 22120305 is about 280.7137614533.

Adding to 22120305 its reverse (50302122), we get a palindrome (72422427).

The spelling of 22120305 in words is "twenty-two million, one hundred twenty thousand, three hundred five".