121440791208 has 64 divisors (see below), whose sum is σ = 334923595200. Its totient is φ = 36386746880.

The previous prime is 121440791207. The next prime is 121440791237. The reversal of 121440791208 is 802197044121.

It is not an unprimeable number, because it can be changed into a prime (121440791207) 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, 2560791 + ... + 2607782.

It is an arithmetic number, because the mean of its divisors is an integer number (5233181175).

Almost surely, 2^121440791208 is an apocalyptic number.

It is an amenable number.

121440791208 is an abundant number, since it is smaller than the sum of its proper divisors (213482803992).

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

121440791208 is a wasteful number, since it uses less digits than its factorization.

121440791208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168682 (or 5168678 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 121440791208 in words is "one hundred twenty-one billion, four hundred forty million, seven hundred ninety-one thousand, two hundred eight".