20121321123302 has 12 divisors (see below), whose sum is σ = 35109652164300. Its totient is φ = 8623423338516.

The previous prime is 20121321123271. The next prime is 20121321123311. The reversal of 20121321123302 is 20332112312102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102659801552 + ... + 102659801747.

It is an arithmetic number, because the mean of its divisors is an integer number (2925804347025).

Almost surely, 2^{20121321123302} is an apocalyptic number.

20121321123302 is a deficient number, since it is larger than the sum of its proper divisors (14988331040998).

20121321123302 is a wasteful number, since it uses less digits than its factorization.

20121321123302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205319603315 (or 205319603308 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20121321123302 its reverse (20332112312102), we get a palindrome (40453433435404).

The spelling of 20121321123302 in words is "twenty trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred two".