1112021209999 has 4 divisors (see below), whose sum is σ = 1270881382864. Its totient is φ = 953161037136.

The previous prime is 1112021209991. The next prime is 1112021210009. The reversal of 1112021209999 is 9999021202111.

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

It is not a de Polignac number, because 1112021209999 - 2³ = 1112021209991 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 (1112021209991) 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, 79430086422 + ... + 79430086435.

It is an arithmetic number, because the mean of its divisors is an integer number (317720345716).

Almost surely, 2^{1112021209999} is an apocalyptic number.

1112021209999 is a deficient number, since it is larger than the sum of its proper divisors (158860172865).

1112021209999 is an equidigital number, since it uses as much as digits as its factorization.

1112021209999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158860172864.

The product of its (nonzero) digits is 52488, while the sum is 46.

The spelling of 1112021209999 in words is "one trillion, one hundred twelve billion, twenty-one million, two hundred nine thousand, nine hundred ninety-nine".