121121030312 has 8 divisors (see below), whose sum is σ = 227101931850. Its totient is φ = 60560515152.

The previous prime is 121121030297. The next prime is 121121030351. The reversal of 121121030312 is 213030121121.

It can be written as a sum of positive squares in only one way, i.e., 85185761956 + 35935268356 = 291866^2 + 189566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7570064387 + ... + 7570064402.

Almost surely, 2^121121030312 is an apocalyptic number.

It is an amenable number.

121121030312 is a deficient number, since it is larger than the sum of its proper divisors (105980901538).

121121030312 is a wasteful number, since it uses less digits than its factorization.

121121030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140128795 (or 15140128791 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121121030312 its reverse (213030121121), we get a palindrome (334151151433).

The spelling of 121121030312 in words is "one hundred twenty-one billion, one hundred twenty-one million, thirty thousand, three hundred twelve".