121416878860 has 24 divisors (see below), whose sum is σ = 255446772336. Its totient is φ = 48476975040.

The previous prime is 121416878837. The next prime is 121416878867. The reversal of 121416878860 is 68878614121.

It is a junction number, because it is equal to n+sod(n) for n = 121416878798 and 121416878807.

It is not an unprimeable number, because it can be changed into a prime (121416878867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5599942 + ... + 5621581.

It is an arithmetic number, because the mean of its divisors is an integer number (10643615514).

Almost surely, 2^121416878860 is an apocalyptic number.

121416878860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121416878860 is an abundant number, since it is smaller than the sum of its proper divisors (134029893476).

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

121416878860 is a wasteful number, since it uses less digits than its factorization.

121416878860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11222073 (or 11222071 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 121416878860 in words is "one hundred twenty-one billion, four hundred sixteen million, eight hundred seventy-eight thousand, eight hundred sixty".