121201302320 has 80 divisors (see below), whose sum is σ = 336051348480. Its totient is φ = 39748000512.

The previous prime is 121201302293. The next prime is 121201302329. The reversal of 121201302320 is 23203102121.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (121201302329) 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, 4692140 + ... + 4717899.

It is an arithmetic number, because the mean of its divisors is an integer number (4200641856).

Almost surely, 2^121201302320 is an apocalyptic number.

121201302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201302320 is an abundant number, since it is smaller than the sum of its proper divisors (214850046160).

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

121201302320 is a wasteful number, since it uses less digits than its factorization.

121201302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410082 (or 9410076 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 121201302320 its reverse (23203102121), we get a palindrome (144404404441).

The spelling of 121201302320 in words is "one hundred twenty-one billion, two hundred one million, three hundred two thousand, three hundred twenty".