121452645312 has 42 divisors (see below), whose sum is σ = 348122080488. Its totient is φ = 40484214912.

The previous prime is 121452645311. The next prime is 121452645343. The reversal of 121452645312 is 213546254121.

121452645312 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 5 + 2 + 645 + 3 + 1 + 2 = 666.

121452645312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121452645311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105427068 + ... + 105428219.

It is an arithmetic number, because the mean of its divisors is an integer number (8288620964).

Almost surely, 2^121452645312 is an apocalyptic number.

121452645312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121452645312 is an abundant number, since it is smaller than the sum of its proper divisors (226669435176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121452645312 is a wasteful number, since it uses less digits than its factorization.

121452645312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210855305 (or 210855292 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 121452645312 its reverse (213546254121), we get a palindrome (334998899433).

The spelling of 121452645312 in words is "one hundred twenty-one billion, four hundred fifty-two million, six hundred forty-five thousand, three hundred twelve".