121369666320 has 240 divisors, whose sum is σ = 472390693632. Its totient is φ = 27350830080.

The previous prime is 121369666307. The next prime is 121369666339. The reversal of 121369666320 is 23666963121.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188254 + ... + 527426.

Almost surely, 2^121369666320 is an apocalyptic number.

121369666320 is a gapful number since it is divisible by the number (10) 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 121369666320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236195346816).

121369666320 is an abundant number, since it is smaller than the sum of its proper divisors (351021027312).

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

121369666320 is a wasteful number, since it uses less digits than its factorization.

121369666320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339270 (or 339261 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 121369666320 in words is "one hundred twenty-one billion, three hundred sixty-nine million, six hundred sixty-six thousand, three hundred twenty".