121220320300 has 36 divisors (see below), whose sum is σ = 267506550360. Its totient is φ = 47666293120.

The previous prime is 121220320259. The next prime is 121220320349. The reversal of 121220320300 is 3023022121.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10267009 + ... + 10278808.

It is an arithmetic number, because the mean of its divisors is an integer number (7430737510).

Almost surely, 2^121220320300 is an apocalyptic number.

121220320300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220320300 is an abundant number, since it is smaller than the sum of its proper divisors (146286230060).

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

121220320300 is a wasteful number, since it uses less digits than its factorization.

121220320300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20545890 (or 20545883 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 121220320300 its reverse (3023022121), we get a palindrome (124243342421).

The spelling of 121220320300 in words is "one hundred twenty-one billion, two hundred twenty million, three hundred twenty thousand, three hundred".