2121011231313 has 8 divisors (see below), whose sum is σ = 3045554588608. Its totient is φ = 1305237680784.

The previous prime is 2121011231293. The next prime is 2121011231347. The reversal of 2121011231313 is 3131321101212.

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

It is not a de Polignac number, because 2121011231313 - 2²⁶ = 2120944122449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121011231313.

It is not an unprimeable number, because it can be changed into a prime (2121011235313) 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, 27192451645 + ... + 27192451722.

It is an arithmetic number, because the mean of its divisors is an integer number (380694323576).

Almost surely, 2^{2121011231313} is an apocalyptic number.

It is an amenable number.

2121011231313 is a deficient number, since it is larger than the sum of its proper divisors (924543357295).

2121011231313 is a wasteful number, since it uses less digits than its factorization.

2121011231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54384903383.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2121011231313 its reverse (3131321101212), we get a palindrome (5252332332525).

The spelling of 2121011231313 in words is "two trillion, one hundred twenty-one billion, eleven million, two hundred thirty-one thousand, three hundred thirteen".