91122112120 has 64 divisors (see below), whose sum is σ = 222821676000. Its totient is φ = 33336396288.

The previous prime is 91122112117. The next prime is 91122112127. The reversal of 91122112120 is 2121122119.

It is a junction number, because it is equal to n+sod(n) for n = 91122112091 and 91122112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91122112127) 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 15 ways as a sum of consecutive naturals, for example, 747150 + ... + 860509.

Almost surely, 2^91122112120 is an apocalyptic number.

It is an amenable number.

91122112120 is an abundant number, since it is smaller than the sum of its proper divisors (131699563880).

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

91122112120 is a wasteful number, since it uses less digits than its factorization.

91122112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607792 (or 1607788 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 91122112120 its reverse (2121122119), we get a palindrome (93243234239).

The spelling of 91122112120 in words is "ninety-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty".