2121312311302 has 8 divisors (see below), whose sum is σ = 3183410235456. Its totient is φ = 1060175566152.

The previous prime is 2121312311257. The next prime is 2121312311303. The reversal of 2121312311302 is 2031132131212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121312311303) 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 3 ways as a sum of consecutive naturals, for example, 240289233 + ... + 240298060.

It is an arithmetic number, because the mean of its divisors is an integer number (397926279432).

Almost surely, 2^{2121312311302} is an apocalyptic number.

2121312311302 is a deficient number, since it is larger than the sum of its proper divisors (1062097924154).

2121312311302 is a wasteful number, since it uses less digits than its factorization.

2121312311302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480589502.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2121312311302 its reverse (2031132131212), we get a palindrome (4152444442514).

The spelling of 2121312311302 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, three hundred eleven thousand, three hundred two".