11112222001999 has 4 divisors (see below), whose sum is σ = 11122979236336. Its totient is φ = 11101464767664.

The previous prime is 11112222001997. The next prime is 11112222002017. The reversal of 11112222001999 is 99910022221111.

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 11112222001999 - 2¹ = 11112222001997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112222001997) 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, 5378615619 + ... + 5378617684.

It is an arithmetic number, because the mean of its divisors is an integer number (2780744809084).

Almost surely, 2^{11112222001999} is an apocalyptic number.

11112222001999 is a deficient number, since it is larger than the sum of its proper divisors (10757234337).

11112222001999 is a wasteful number, since it uses less digits than its factorization.

11112222001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10757234336.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 11112222001999 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, one thousand, nine hundred ninety-nine".