121108412784 has 40 divisors (see below), whose sum is σ = 312876224640. Its totient is φ = 40367816128.

The previous prime is 121108412773. The next prime is 121108412809. The reversal of 121108412784 is 487214801121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860109 + ... + 1924115.

It is an arithmetic number, because the mean of its divisors is an integer number (7821905616).

Almost surely, 2^121108412784 is an apocalyptic number.

It is an amenable number.

121108412784 is an abundant number, since it is smaller than the sum of its proper divisors (191767811856).

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

121108412784 is a wasteful number, since it uses less digits than its factorization.

121108412784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103437 (or 103431 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 39.

The spelling of 121108412784 in words is "one hundred twenty-one billion, one hundred eight million, four hundred twelve thousand, seven hundred eighty-four".