11221100999 has 2 divisors, whose sum is σ = 11221101000. Its totient is φ = 11221100998.

The previous prime is 11221100981. The next prime is 11221101041. The reversal of 11221100999 is 99900112211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11221100999 - 2⁸ = 11221100743 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221100939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610550499 + 5610550500.

It is an arithmetic number, because the mean of its divisors is an integer number (5610550500).

Almost surely, 2^11221100999 is an apocalyptic number.

11221100999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221100999 is an equidigital number, since it uses as much as digits as its factorization.

11221100999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 11221100999 in words is "eleven billion, two hundred twenty-one million, one hundred thousand, nine hundred ninety-nine".