391201573122 has 192 divisors, whose sum is σ = 908947353600. Its totient is φ = 121387714560.

The previous prime is 391201573111. The next prime is 391201573153. The reversal of 391201573122 is 221375102193.

It is a happy number.

391201573122 is a `hidden beast` number, since 3 + 91 + 201 + 57 + 312 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 644483343 + ... + 644483949.

It is an arithmetic number, because the mean of its divisors is an integer number (4734100800).

Almost surely, 2^391201573122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391201573122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454473676800).

391201573122 is an abundant number, since it is smaller than the sum of its proper divisors (517745780478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391201573122 is a wasteful number, since it uses less digits than its factorization.

391201573122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 391201573122 in words is "three hundred ninety-one billion, two hundred one million, five hundred seventy-three thousand, one hundred twenty-two".