121280007320 has 64 divisors (see below), whose sum is σ = 288507916800. Its totient is φ = 45756213120.

The previous prime is 121280007283. The next prime is 121280007323. The reversal of 121280007320 is 23700082121.

It is a self number, because there is not a number n which added to its sum of digits gives 121280007320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121280007323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178976 + ... + 524015.

It is an arithmetic number, because the mean of its divisors is an integer number (4507936200).

Almost surely, 2^121280007320 is an apocalyptic number.

121280007320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121280007320 is an abundant number, since it is smaller than the sum of its proper divisors (167227909480).

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

121280007320 is a wasteful number, since it uses less digits than its factorization.

121280007320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703248 (or 703244 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 121280007320 its reverse (23700082121), we get a palindrome (144980089441).

The spelling of 121280007320 in words is "one hundred twenty-one billion, two hundred eighty million, seven thousand, three hundred twenty".