121112010992 has 80 divisors (see below), whose sum is σ = 282930581760. Its totient is φ = 49061915136.

The previous prime is 121112010979. The next prime is 121112011043. The reversal of 121112010992 is 299010211121.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 878468 + ... + 1006940.

It is an arithmetic number, because the mean of its divisors is an integer number (3536632272).

Almost surely, 2^121112010992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121112010992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141465290880).

121112010992 is an abundant number, since it is smaller than the sum of its proper divisors (161818570768).

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

121112010992 is a wasteful number, since it uses less digits than its factorization.

121112010992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128950 (or 128944 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 121112010992 in words is "one hundred twenty-one billion, one hundred twelve million, ten thousand, nine hundred ninety-two".