22228111 has 2 divisors, whose sum is σ = 22228112. Its totient is φ = 22228110.

The previous prime is 22228099. The next prime is 22228127. The reversal of 22228111 is 11182222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22228111 - 2⁷ = 22227983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22223111) 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, 11114055 + 11114056.

It is an arithmetic number, because the mean of its divisors is an integer number (11114056).

Almost surely, 2^22228111 is an apocalyptic number.

22228111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22228111 is an equidigital number, since it uses as much as digits as its factorization.

22228111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 19.

The square root of 22228111 is about 4714.6697657418. The cubic root of 22228111 is about 281.1690535116.

The spelling of 22228111 in words is "twenty-two million, two hundred twenty-eight thousand, one hundred eleven".