22130401 has 2 divisors, whose sum is σ = 22130402. Its totient is φ = 22130400.

The previous prime is 22130387. The next prime is 22130411. The reversal of 22130401 is 10403122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22090000 + 40401 = 4700^2 + 201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22130401 is a prime.

It is not a weakly prime, because it can be changed into another prime (22130411) by changing a digit.

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 as a sum of consecutive naturals, namely, 11065200 + 11065201.

It is an arithmetic number, because the mean of its divisors is an integer number (11065201).

Almost surely, 2^22130401 is an apocalyptic number.

It is an amenable number.

22130401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22130401 is an equidigital number, since it uses as much as digits as its factorization.

22130401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22130401 is about 4704.2960153460. The cubic root of 22130401 is about 280.7564621164.

Adding to 22130401 its reverse (10403122), we get a palindrome (32533523).

The spelling of 22130401 in words is "twenty-two million, one hundred thirty thousand, four hundred one".