22135401 has 6 divisors (see below), whose sum is σ = 31973370. Its totient is φ = 14756928.

The previous prime is 22135387. The next prime is 22135403. The reversal of 22135401 is 10453122.

It can be written as a sum of positive squares in only one way, i.e., 12531600 + 9603801 = 3540^2 + 3099^2 .

It is not a de Polignac number, because 22135401 - 2¹⁰ = 22134377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22135403) 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 5 ways as a sum of consecutive naturals, for example, 1229736 + ... + 1229753.

It is an arithmetic number, because the mean of its divisors is an integer number (5328895).

Almost surely, 2^22135401 is an apocalyptic number.

It is an amenable number.

22135401 is a deficient number, since it is larger than the sum of its proper divisors (9837969).

22135401 is a wasteful number, since it uses less digits than its factorization.

22135401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459495 (or 2459492 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22135401 is about 4704.8274144755. The cubic root of 22135401 is about 280.7776046254. Note that the first 3 decimals are identical.

Adding to 22135401 its reverse (10453122), we get a palindrome (32588523).

The spelling of 22135401 in words is "twenty-two million, one hundred thirty-five thousand, four hundred one".