121003121320 has 32 divisors (see below), whose sum is σ = 275703321600. Its totient is φ = 47788573248.

The previous prime is 121003121297. The next prime is 121003121401. The reversal of 121003121320 is 23121300121.

It is a junction number, because it is equal to n+sod(n) for n = 121003121294 and 121003121303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19142904 + ... + 19149223.

It is an arithmetic number, because the mean of its divisors is an integer number (8615728800).

Almost surely, 2^121003121320 is an apocalyptic number.

121003121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121003121320 is an abundant number, since it is smaller than the sum of its proper divisors (154700200280).

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

121003121320 is a wasteful number, since it uses less digits than its factorization.

121003121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38292217 (or 38292213 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121003121320 its reverse (23121300121), we get a palindrome (144124421441).

The spelling of 121003121320 in words is "one hundred twenty-one billion, three million, one hundred twenty-one thousand, three hundred twenty".