121021424312 has 32 divisors (see below), whose sum is σ = 238885737600. Its totient is φ = 57319298784.

The previous prime is 121021424291. The next prime is 121021424317. The reversal of 121021424312 is 213424120121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021424317) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1424453 + ... + 1507019.

It is an arithmetic number, because the mean of its divisors is an integer number (7465179300).

Almost surely, 2^121021424312 is an apocalyptic number.

It is an amenable number.

121021424312 is a deficient number, since it is larger than the sum of its proper divisors (117864313288).

121021424312 is a wasteful number, since it uses less digits than its factorization.

121021424312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92235 (or 92231 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 121021424312 its reverse (213424120121), we get a palindrome (334445544433).

The spelling of 121021424312 in words is "one hundred twenty-one billion, twenty-one million, four hundred twenty-four thousand, three hundred twelve".