9131311021122 has 64 divisors (see below), whose sum is σ = 20591453491200. Its totient is φ = 2998880372880.

The previous prime is 9131311021121. The next prime is 9131311021159. The reversal of 9131311021122 is 2211201131319.

9131311021122 is a `hidden beast` number, since 9 + 1 + 313 + 110 + 211 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (9131311021121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4900329 + ... + 6501987.

It is an arithmetic number, because the mean of its divisors is an integer number (321741460800).

Almost surely, 2^{9131311021122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9131311021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10295726745600).

9131311021122 is an abundant number, since it is smaller than the sum of its proper divisors (11460142470078).

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

9131311021122 is a wasteful number, since it uses less digits than its factorization.

9131311021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603228 (or 1603222 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 9131311021122 in words is "nine trillion, one hundred thirty-one billion, three hundred eleven million, twenty-one thousand, one hundred twenty-two".