791012122001 has 4 divisors (see below), whose sum is σ = 818288402100. Its totient is φ = 763735841904.

The previous prime is 791012121979. The next prime is 791012122063. The reversal of 791012122001 is 100221210197.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 665749924225 + 125262197776 = 815935^2 + 353924^2 .

It is a cyclic number.

It is not a de Polignac number, because 791012122001 - 2⁶ = 791012121937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791012112001) 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 3 ways as a sum of consecutive naturals, for example, 13638140006 + ... + 13638140063.

It is an arithmetic number, because the mean of its divisors is an integer number (204572100525).

Almost surely, 2^791012122001 is an apocalyptic number.

It is an amenable number.

791012122001 is a deficient number, since it is larger than the sum of its proper divisors (27276280099).

791012122001 is a wasteful number, since it uses less digits than its factorization.

791012122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27276280098.

The product of its (nonzero) digits is 504, while the sum is 26.

Adding to 791012122001 its reverse (100221210197), we get a palindrome (891233332198).

The spelling of 791012122001 in words is "seven hundred ninety-one billion, twelve million, one hundred twenty-two thousand, one".