22022451 has 24 divisors (see below), whose sum is σ = 34922160. Its totient is φ = 13262400.

The previous prime is 22022449. The next prime is 22022459. The reversal of 22022451 is 15422022.

It is not a de Polignac number, because 22022451 - 2¹ = 22022449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22022459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17305 + ... + 18533.

It is an arithmetic number, because the mean of its divisors is an integer number (1455090).

Almost surely, 2^22022451 is an apocalyptic number.

22022451 is a deficient number, since it is larger than the sum of its proper divisors (12899709).

22022451 is a wasteful number, since it uses less digits than its factorization.

22022451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22022451 is about 4692.8084341895. The cubic root of 22022451 is about 280.2992166985.

Adding to 22022451 its reverse (15422022), we get a palindrome (37444473).

The spelling of 22022451 in words is "twenty-two million, twenty-two thousand, four hundred fifty-one".