2121002313 has 8 divisors (see below), whose sum is σ = 2829754176. Its totient is φ = 1413126000.

The previous prime is 2121002287. The next prime is 2121002321. The reversal of 2121002313 is 3132001212.

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

It is not a de Polignac number, because 2121002313 - 2⁶ = 2121002249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121002292 and 2121002301.

It is not an unprimeable number, because it can be changed into a prime (2121002713) 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, 213213 + ... + 222938.

It is an arithmetic number, because the mean of its divisors is an integer number (353719272).

Almost surely, 2^2121002313 is an apocalyptic number.

It is an amenable number.

2121002313 is a deficient number, since it is larger than the sum of its proper divisors (708751863).

2121002313 is a wasteful number, since it uses less digits than its factorization.

2121002313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437775.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2121002313 is about 46054.3408703240. The cubic root of 2121002313 is about 1284.8340791185.

Adding to 2121002313 its reverse (3132001212), we get a palindrome (5253003525).

The spelling of 2121002313 in words is "two billion, one hundred twenty-one million, two thousand, three hundred thirteen".