121039140012 has 96 divisors (see below), whose sum is σ = 326203379712. Its totient is φ = 34215690816.

The previous prime is 121039140011. The next prime is 121039140029. The reversal of 121039140012 is 210041930121.

It is not an unprimeable number, because it can be changed into a prime (121039140011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7388943 + ... + 7405305.

It is an arithmetic number, because the mean of its divisors is an integer number (3397951872).

Almost surely, 2^121039140012 is an apocalyptic number.

121039140012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121039140012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163101689856).

121039140012 is an abundant number, since it is smaller than the sum of its proper divisors (205164239700).

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

121039140012 is a wasteful number, since it uses less digits than its factorization.

121039140012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17307 (or 17305 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 121039140012 in words is "one hundred twenty-one billion, thirty-nine million, one hundred forty thousand, twelve".