1012111119991 has 2 divisors, whose sum is σ = 1012111119992. Its totient is φ = 1012111119990.

The previous prime is 1012111119983. The next prime is 1012111120037. The reversal of 1012111119991 is 1999111112101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012111119991 - 2³ = 1012111119983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012111119991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012117119991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506055559995 + 506055559996.

It is an arithmetic number, because the mean of its divisors is an integer number (506055559996).

Almost surely, 2^{1012111119991} is an apocalyptic number.

1012111119991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012111119991 is an equidigital number, since it uses as much as digits as its factorization.

1012111119991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 37.

The spelling of 1012111119991 in words is "one trillion, twelve billion, one hundred eleven million, one hundred nineteen thousand, nine hundred ninety-one".