11121001099 has 4 divisors (see below), whose sum is σ = 11976462736. Its totient is φ = 10265539464.

The previous prime is 11121001079. The next prime is 11121001109. The reversal of 11121001099 is 99010012111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11121001099 - 2³¹ = 8973517451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121001019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427730799 + ... + 427730824.

It is an arithmetic number, because the mean of its divisors is an integer number (2994115684).

Almost surely, 2^11121001099 is an apocalyptic number.

11121001099 is a deficient number, since it is larger than the sum of its proper divisors (855461637).

11121001099 is an equidigital number, since it uses as much as digits as its factorization.

11121001099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855461636.

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 11121001099 in words is "eleven billion, one hundred twenty-one million, one thousand, ninety-nine".