22100501 has 2 divisors, whose sum is σ = 22100502. Its totient is φ = 22100500.

The previous prime is 22100497. The next prime is 22100503. The reversal of 22100501 is 10500122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17648401 + 4452100 = 4201^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100501 - 2² = 22100497 is a prime.

Together with 22100503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100503) 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 as a sum of consecutive naturals, namely, 11050250 + 11050251.

It is an arithmetic number, because the mean of its divisors is an integer number (11050251).

Almost surely, 2^22100501 is an apocalyptic number.

It is an amenable number.

22100501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100501 is an equidigital number, since it uses as much as digits as its factorization.

22100501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 22100501 is about 4701.1169949279. The cubic root of 22100501 is about 280.6299634045.

Adding to 22100501 its reverse (10500122), we get a palindrome (32600623).

The spelling of 22100501 in words is "twenty-two million, one hundred thousand, five hundred one".