11111442999 has 8 divisors (see below), whose sum is σ = 14819247360. Its totient is φ = 7405633656.

The previous prime is 11111442997. The next prime is 11111443001. The reversal of 11111442999 is 99924411111.

11111442999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11111442997) and next prime (11111443001).

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

It is not a de Polignac number, because 11111442999 - 2¹ = 11111442997 is a prime.

It is a super-2 number, since 2×11111442999² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11111442999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111442997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485709 + ... + 508070.

It is an arithmetic number, because the mean of its divisors is an integer number (1852405920).

Almost surely, 2^11111442999 is an apocalyptic number.

11111442999 is a deficient number, since it is larger than the sum of its proper divisors (3707804361).

11111442999 is an equidigital number, since it uses as much as digits as its factorization.

11111442999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997509.

The product of its digits is 23328, while the sum is 42.

The spelling of 11111442999 in words is "eleven billion, one hundred eleven million, four hundred forty-two thousand, nine hundred ninety-nine".