991132231201322 has 32 divisors (see below), whose sum is σ = 1732924856052864. Its totient is φ = 416327206276800.

The previous prime is 991132231201319. The next prime is 991132231201337. The reversal of 991132231201322 is 223102132231199.

991132231201322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×991132231201322² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 991132231201322.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687105329 + ... + 688546292.

It is an arithmetic number, because the mean of its divisors is an integer number (54153901751652).

Almost surely, 2^{991132231201322} is an apocalyptic number.

991132231201322 is a deficient number, since it is larger than the sum of its proper divisors (741792624851542).

991132231201322 is a wasteful number, since it uses less digits than its factorization.

991132231201322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375652654.

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 991132231201322 in words is "nine hundred ninety-one trillion, one hundred thirty-two billion, two hundred thirty-one million, two hundred one thousand, three hundred twenty-two".