121320358223712 has 96 divisors (see below), whose sum is σ = 320309089198560. Its totient is φ = 40206616289280.

The previous prime is 121320358223677. The next prime is 121320358223719. The reversal of 121320358223712 is 217322853023121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320358223719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9905214 + ... + 18459522.

It is an arithmetic number, because the mean of its divisors is an integer number (3336553012485).

Almost surely, 2^{121320358223712} is an apocalyptic number.

121320358223712 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 121320358223712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160154544599280).

121320358223712 is an abundant number, since it is smaller than the sum of its proper divisors (198988730974848).

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

121320358223712 is a wasteful number, since it uses less digits than its factorization.

121320358223712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555176 (or 8555168 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 121320358223712 in words is "one hundred twenty-one trillion, three hundred twenty billion, three hundred fifty-eight million, two hundred twenty-three thousand, seven hundred twelve".