2121230131313 has 16 divisors (see below), whose sum is σ = 2199166200000. Its totient is φ = 2043614903232.

The previous prime is 2121230131309. The next prime is 2121230131327. The reversal of 2121230131313 is 3131310321212.

It is a cyclic number.

It is not a de Polignac number, because 2121230131313 - 2² = 2121230131309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2121230131393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117452078 + ... + 117470136.

It is an arithmetic number, because the mean of its divisors is an integer number (137447887500).

Almost surely, 2^{2121230131313} is an apocalyptic number.

It is an amenable number.

2121230131313 is a deficient number, since it is larger than the sum of its proper divisors (77936068687).

2121230131313 is a wasteful number, since it uses less digits than its factorization.

2121230131313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26704.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2121230131313 its reverse (3131310321212), we get a palindrome (5252540452525).

The spelling of 2121230131313 in words is "two trillion, one hundred twenty-one billion, two hundred thirty million, one hundred thirty-one thousand, three hundred thirteen".