121312120012 has 6 divisors (see below), whose sum is σ = 212296210028. Its totient is φ = 60656060004.

The previous prime is 121312119991. The next prime is 121312120049. The reversal of 121312120012 is 210021213121.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15164014998 + ... + 15164015005.

Almost surely, 2^121312120012 is an apocalyptic number.

It is an amenable number.

121312120012 is a deficient number, since it is larger than the sum of its proper divisors (90984090016).

121312120012 is a wasteful number, since it uses less digits than its factorization.

121312120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30328030007 (or 30328030005 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121312120012 its reverse (210021213121), we get a palindrome (331333333133).

The spelling of 121312120012 in words is "one hundred twenty-one billion, three hundred twelve million, one hundred twenty thousand, twelve".