1002011111191 has 8 divisors (see below), whose sum is σ = 1012060478304. Its totient is φ = 991964263200.

The previous prime is 1002011111131. The next prime is 1002011111197. The reversal of 1002011111191 is 1911111102001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002011111191 - 2⁹ = 1002011110679 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 (1002011111197) 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 7 ways as a sum of consecutive naturals, for example, 174861 + ... + 1426393.

It is an arithmetic number, because the mean of its divisors is an integer number (126507559788).

Almost surely, 2^{1002011111191} is an apocalyptic number.

1002011111191 is a deficient number, since it is larger than the sum of its proper divisors (10049367113).

1002011111191 is a wasteful number, since it uses less digits than its factorization.

1002011111191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259561.

The product of its (nonzero) digits is 18, while the sum is 19.

Adding to 1002011111191 its reverse (1911111102001), we get a palindrome (2913122213192).

The spelling of 1002011111191 in words is "one trillion, two billion, eleven million, one hundred eleven thousand, one hundred ninety-one".