121020300312 has 32 divisors (see below), whose sum is σ = 306812033280. Its totient is φ = 39771929120.

The previous prime is 121020300263. The next prime is 121020300343. The reversal of 121020300312 is 213003020121.

It is a junction number, because it is equal to n+sod(n) for n = 121020300291 and 121020300300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35508948 + ... + 35512355.

It is an arithmetic number, because the mean of its divisors is an integer number (9587876040).

Almost surely, 2^121020300312 is an apocalyptic number.

121020300312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121020300312 is an abundant number, since it is smaller than the sum of its proper divisors (185791732968).

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

121020300312 is a wasteful number, since it uses less digits than its factorization.

121020300312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71021383 (or 71021379 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121020300312 its reverse (213003020121), we get a palindrome (334023320433).

The spelling of 121020300312 in words is "one hundred twenty-one billion, twenty million, three hundred thousand, three hundred twelve".