22550111 has 2 divisors, whose sum is σ = 22550112. Its totient is φ = 22550110.

The previous prime is 22550089. The next prime is 22550117. The reversal of 22550111 is 11105522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22550111 is a prime.

It is a super-2 number, since 2×22550111² = 1017015012224642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22550111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22550117) 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, 11275055 + 11275056.

It is an arithmetic number, because the mean of its divisors is an integer number (11275056).

Almost surely, 2^22550111 is an apocalyptic number.

22550111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22550111 is an equidigital number, since it uses as much as digits as its factorization.

22550111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 22550111 is about 4748.6957156676. The cubic root of 22550111 is about 282.5202366269.

Adding to 22550111 its reverse (11105522), we get a palindrome (33655633).

The spelling of 22550111 in words is "twenty-two million, five hundred fifty thousand, one hundred eleven".