1001111212199 has 16 divisors (see below), whose sum is σ = 1173244993536. Its totient is φ = 836300203200.

The previous prime is 1001111212183. The next prime is 1001111212217. The reversal of 1001111212199 is 9912121111001.

It is not a de Polignac number, because 1001111212199 - 2⁴ = 1001111212183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001111212109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1526087 + ... + 2081144.

It is an arithmetic number, because the mean of its divisors is an integer number (73327812096).

Almost surely, 2^{1001111212199} is an apocalyptic number.

1001111212199 is a deficient number, since it is larger than the sum of its proper divisors (172133781337).

1001111212199 is an equidigital number, since it uses as much as digits as its factorization.

1001111212199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608246.

The product of its (nonzero) digits is 324, while the sum is 29.

The spelling of 1001111212199 in words is "one trillion, one billion, one hundred eleven million, two hundred twelve thousand, one hundred ninety-nine".