121021300312 has 32 divisors (see below), whose sum is σ = 253581224400. Its totient is φ = 53667980800.

The previous prime is 121021300307. The next prime is 121021300313. The reversal of 121021300312 is 213003120121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021300313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16767637 + ... + 16774852.

Almost surely, 2^121021300312 is an apocalyptic number.

It is an amenable number.

121021300312 is an abundant number, since it is smaller than the sum of its proper divisors (132559924088).

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

121021300312 is a wasteful number, since it uses less digits than its factorization.

121021300312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33542547 (or 33542543 counting only the distinct ones).

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

Adding to 121021300312 its reverse (213003120121), we get a palindrome (334024420433).

The spelling of 121021300312 in words is "one hundred twenty-one billion, twenty-one million, three hundred thousand, three hundred twelve".