121299734808 has 144 divisors (see below), whose sum is σ = 382689805680. Its totient is φ = 34608663936.

The previous prime is 121299734761. The next prime is 121299734827. The reversal of 121299734808 is 808437992121.

121299734808 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 99 + 73 + 480 + 8 = 666.

It is a super-2 number, since 2×121299734808² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2541210 + ... + 2588502.

It is an arithmetic number, because the mean of its divisors is an integer number (2657568095).

Almost surely, 2^121299734808 is an apocalyptic number.

121299734808 is a gapful number since it is divisible by the number (18) 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 121299734808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191344902840).

121299734808 is an abundant number, since it is smaller than the sum of its proper divisors (261390070872).

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

121299734808 is a wasteful number, since it uses less digits than its factorization.

121299734808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48046 (or 48032 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 121299734808 in words is "one hundred twenty-one billion, two hundred ninety-nine million, seven hundred thirty-four thousand, eight hundred eight".