791000122111 has 8 divisors (see below), whose sum is σ = 844586582400. Its totient is φ = 739013257752.

The previous prime is 791000122097. The next prime is 791000122127. The reversal of 791000122111 is 111221000197.

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 791000122111 - 2¹³ = 791000113919 is a prime.

It is a super-2 number, since 2×791000122111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791000122141) 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, 399897961 + ... + 399899938.

It is an arithmetic number, because the mean of its divisors is an integer number (105573322800).

Almost surely, 2^791000122111 is an apocalyptic number.

791000122111 is a deficient number, since it is larger than the sum of its proper divisors (53586460289).

791000122111 is a wasteful number, since it uses less digits than its factorization.

791000122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799797965.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 791000122111 in words is "seven hundred ninety-one billion, one hundred twenty-two thousand, one hundred eleven".