12121020121302 has 48 divisors (see below), whose sum is σ = 28119484944720. Its totient is φ = 3759946308096.

The previous prime is 12121020121261. The next prime is 12121020121307. The reversal of 12121020121302 is 20312102012121.

12121020121302 is a `hidden beast` number, since 1 + 212 + 10 + 20 + 121 + 302 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121020121307) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 222507468 + ... + 222561935.

It is an arithmetic number, because the mean of its divisors is an integer number (585822603015).

Almost surely, 2^{12121020121302} is an apocalyptic number.

12121020121302 is an abundant number, since it is smaller than the sum of its proper divisors (15998464823418).

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

12121020121302 is a wasteful number, since it uses less digits than its factorization.

12121020121302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445069517 (or 445069514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12121020121302 its reverse (20312102012121), we get a palindrome (32433122133423).

The spelling of 12121020121302 in words is "twelve trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, three hundred two".