1111226999 has 2 divisors, whose sum is σ = 1111227000. Its totient is φ = 1111226998.

The previous prime is 1111226953. The next prime is 1111227001. The reversal of 1111226999 is 9996221111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111226999 is a prime.

Together with 1111227001, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111226929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555613499 + 555613500.

It is an arithmetic number, because the mean of its divisors is an integer number (555613500).

Almost surely, 2^1111226999 is an apocalyptic number.

1111226999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111226999 is an equidigital number, since it uses as much as digits as its factorization.

1111226999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 41.

The square root of 1111226999 is about 33335.0716063428. The cubic root of 1111226999 is about 1035.7801764610.

The spelling of 1111226999 in words is "one billion, one hundred eleven million, two hundred twenty-six thousand, nine hundred ninety-nine".