22134401 has 4 divisors (see below), whose sum is σ = 22165332. Its totient is φ = 22103472.

The previous prime is 22134377. The next prime is 22134407. The reversal of 22134401 is 10443122.

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 15249025 + 6885376 = 3905^2 + 2624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22134401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22134401.

It is not an unprimeable number, because it can be changed into a prime (22134407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14366 + ... + 15831.

It is an arithmetic number, because the mean of its divisors is an integer number (5541333).

Almost surely, 2^22134401 is an apocalyptic number.

It is an amenable number.

22134401 is a deficient number, since it is larger than the sum of its proper divisors (30931).

22134401 is an equidigital number, since it uses as much as digits as its factorization.

22134401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30930.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22134401 is about 4704.7211394513. The cubic root of 22134401 is about 280.7733763783.

Adding to 22134401 its reverse (10443122), we get a palindrome (32577523).

The spelling of 22134401 in words is "twenty-two million, one hundred thirty-four thousand, four hundred one".