1112111121999 has 4 divisors (see below), whose sum is σ = 1482814829336. Its totient is φ = 741407414664.

The previous prime is 1112111121911. The next prime is 1112111122027. The reversal of 1112111121999 is 9991211112111.

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

It is not a de Polignac number, because 1112111121999 - 2⁹ = 1112111121487 is a prime.

It is a super-2 number, since 2×1112111121999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112111121599) 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, 185351853664 + ... + 185351853669.

It is an arithmetic number, because the mean of its divisors is an integer number (370703707334).

Almost surely, 2^{1112111121999} is an apocalyptic number.

1112111121999 is a deficient number, since it is larger than the sum of its proper divisors (370703707337).

1112111121999 is an equidigital number, since it uses as much as digits as its factorization.

1112111121999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370703707336.

The product of its digits is 2916, while the sum is 39.

The spelling of 1112111121999 in words is "one trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty-one thousand, nine hundred ninety-nine".