121194155936 has 192 divisors, whose sum is σ = 284597494272. Its totient is φ = 49723932672.

The previous prime is 121194155897. The next prime is 121194155947. The reversal of 121194155936 is 639551491121.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 187316765 + ... + 187317411.

It is an arithmetic number, because the mean of its divisors is an integer number (1482278616).

Almost surely, 2^121194155936 is an apocalyptic number.

121194155936 is a gapful number since it is divisible by the number (16) 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 121194155936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142298747136).

121194155936 is an abundant number, since it is smaller than the sum of its proper divisors (163403338336).

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

121194155936 is a wasteful number, since it uses less digits than its factorization.

121194155936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1023 counting only the distinct ones).

The product of its digits is 291600, while the sum is 47.

The spelling of 121194155936 in words is "one hundred twenty-one billion, one hundred ninety-four million, one hundred fifty-five thousand, nine hundred thirty-six".