11221221199 has 8 divisors (see below), whose sum is σ = 11392606368. Its totient is φ = 11050206720.

The previous prime is 11221221113. The next prime is 11221221217. The reversal of 11221221199 is 99112212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11221221199 - 2⁹ = 11221220687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221221199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221251199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31362 + ... + 153055.

It is an arithmetic number, because the mean of its divisors is an integer number (1424075796).

Almost surely, 2^11221221199 is an apocalyptic number.

11221221199 is a deficient number, since it is larger than the sum of its proper divisors (171385169).

11221221199 is an equidigital number, since it uses as much as digits as its factorization.

11221221199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185345.

The product of its digits is 1296, while the sum is 31.

The spelling of 11221221199 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ninety-nine".