121700405809392 has 160 divisors (see below), whose sum is σ = 321727338132480. Its totient is φ = 39632698736640.

The previous prime is 121700405809391. The next prime is 121700405809403. The reversal of 121700405809392 is 293908504007121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121700405809391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160817017 + ... + 161572007.

It is an arithmetic number, because the mean of its divisors is an integer number (2010795863328).

Almost surely, 2^{121700405809392} is an apocalyptic number.

121700405809392 is a gapful number since it is divisible by the number (12) 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 121700405809392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160863669066240).

121700405809392 is an abundant number, since it is smaller than the sum of its proper divisors (200026932323088).

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

121700405809392 is a wasteful number, since it uses less digits than its factorization.

121700405809392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755511 (or 755505 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 121700405809392 in words is "one hundred twenty-one trillion, seven hundred billion, four hundred five million, eight hundred nine thousand, three hundred ninety-two".