2121332313 has 8 divisors (see below), whose sum is σ = 2828665408. Its totient is φ = 1414110384.

The previous prime is 2121332309. The next prime is 2121332321. The reversal of 2121332313 is 3132331212.

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

It is not a de Polignac number, because 2121332313 - 2² = 2121332309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121332313.

It is not an unprimeable number, because it can be changed into a prime (2121332413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41220 + ... + 77082.

It is an arithmetic number, because the mean of its divisors is an integer number (353583176).

Almost surely, 2^2121332313 is an apocalyptic number.

It is an amenable number.

2121332313 is a deficient number, since it is larger than the sum of its proper divisors (707333095).

2121332313 is a wasteful number, since it uses less digits than its factorization.

2121332313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55583.

The product of its digits is 648, while the sum is 21.

The square root of 2121332313 is about 46057.9234551450. The cubic root of 2121332313 is about 1284.9007100782.

Adding to 2121332313 its reverse (3132331212), we get a palindrome (5253663525).

The spelling of 2121332313 in words is "two billion, one hundred twenty-one million, three hundred thirty-two thousand, three hundred thirteen".