2121313231302 has 16 divisors (see below), whose sum is σ = 4281549642480. Its totient is φ = 700617213792.

The previous prime is 2121313231259. The next prime is 2121313231307. The reversal of 2121313231302 is 2031323131212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121313231307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621798453 + ... + 1621799760.

It is an arithmetic number, because the mean of its divisors is an integer number (267596852655).

Almost surely, 2^{2121313231302} is an apocalyptic number.

2121313231302 is an abundant number, since it is smaller than the sum of its proper divisors (2160236411178).

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

2121313231302 is a wasteful number, since it uses less digits than its factorization.

2121313231302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243598327.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2121313231302 its reverse (2031323131212), we get a palindrome (4152636362514).

The spelling of 2121313231302 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, two hundred thirty-one thousand, three hundred two".