121836984910 has 16 divisors (see below), whose sum is σ = 230849024400. Its totient is φ = 46169804736.

The previous prime is 121836984821. The next prime is 121836984911. The reversal of 121836984910 is 19489638121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121836984911) 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 7 ways as a sum of consecutive naturals, for example, 320623455 + ... + 320623834.

It is an arithmetic number, because the mean of its divisors is an integer number (14428064025).

Almost surely, 2^121836984910 is an apocalyptic number.

121836984910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121836984910 is a deficient number, since it is larger than the sum of its proper divisors (109012039490).

121836984910 is a wasteful number, since it uses less digits than its factorization.

121836984910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641247315.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 121836984910 in words is "one hundred twenty-one billion, eight hundred thirty-six million, nine hundred eighty-four thousand, nine hundred ten".