1002112219991 has 2 divisors, whose sum is σ = 1002112219992. Its totient is φ = 1002112219990.

The previous prime is 1002112219987. The next prime is 1002112220003. The reversal of 1002112219991 is 1999122112001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002112219991 - 2² = 1002112219987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002112719991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501056109995 + 501056109996.

It is an arithmetic number, because the mean of its divisors is an integer number (501056109996).

Almost surely, 2^{1002112219991} is an apocalyptic number.

1002112219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002112219991 is an equidigital number, since it uses as much as digits as its factorization.

1002112219991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 1002112219991 in words is "one trillion, two billion, one hundred twelve million, two hundred nineteen thousand, nine hundred ninety-one".