121200232312 has 8 divisors (see below), whose sum is σ = 227250435600. Its totient is φ = 60600116152.

The previous prime is 121200232301. The next prime is 121200232357. The reversal of 121200232312 is 213232002121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121200232312.

It is a congruent number.

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, 7575014512 + ... + 7575014527.

It is an arithmetic number, because the mean of its divisors is an integer number (28406304450).

Almost surely, 2^121200232312 is an apocalyptic number.

It is an amenable number.

121200232312 is a deficient number, since it is larger than the sum of its proper divisors (106050203288).

121200232312 is a wasteful number, since it uses less digits than its factorization.

121200232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15150029045 (or 15150029041 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121200232312 its reverse (213232002121), we get a palindrome (334432234433).

The spelling of 121200232312 in words is "one hundred twenty-one billion, two hundred million, two hundred thirty-two thousand, three hundred twelve".