121302121312 has 12 divisors (see below), whose sum is σ = 238813551396. Its totient is φ = 60651060640.

The previous prime is 121302121309. The next prime is 121302121327. The reversal of 121302121312 is 213121203121.

It is a self number, because there is not a number n which added to its sum of digits gives 121302121312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895345614 + ... + 1895345677.

It is an arithmetic number, because the mean of its divisors is an integer number (19901129283).

Almost surely, 2^121302121312 is an apocalyptic number.

It is an amenable number.

121302121312 is a deficient number, since it is larger than the sum of its proper divisors (117511430084).

121302121312 is an equidigital number, since it uses as much as digits as its factorization.

121302121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790691301 (or 3790691293 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121302121312 its reverse (213121203121), we get a palindrome (334423324433).

The spelling of 121302121312 in words is "one hundred twenty-one billion, three hundred two million, one hundred twenty-one thousand, three hundred twelve".