2111001220191 has 8 divisors (see below), whose sum is σ = 2814685251840. Its totient is φ = 1407325667672.

The previous prime is 2111001220187. The next prime is 2111001220217. The reversal of 2111001220191 is 1910221001112.

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 2111001220191 - 2² = 2111001220187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111001220291) 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 in 7 ways as a sum of consecutive naturals, for example, 1514145 + ... + 2552378.

It is an arithmetic number, because the mean of its divisors is an integer number (351835656480).

Almost surely, 2^{2111001220191} is an apocalyptic number.

2111001220191 is a deficient number, since it is larger than the sum of its proper divisors (703684031649).

2111001220191 is a wasteful number, since it uses less digits than its factorization.

2111001220191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4239565.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 2111001220191 in words is "two trillion, one hundred eleven billion, one million, two hundred twenty thousand, one hundred ninety-one".