2101212313 has 8 divisors (see below), whose sum is σ = 2199859200. Its totient is φ = 2004311568.

The previous prime is 2101212251. The next prime is 2101212317. The reversal of 2101212313 is 3132121012.

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

It is a de Polignac number, because none of the positive numbers 2^k-2101212313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101212317) 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, 434073 + ... + 438886.

It is an arithmetic number, because the mean of its divisors is an integer number (274982400).

Almost surely, 2^2101212313 is an apocalyptic number.

It is an amenable number.

2101212313 is a deficient number, since it is larger than the sum of its proper divisors (98646887).

2101212313 is an equidigital number, since it uses as much as digits as its factorization.

2101212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873071.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2101212313 is about 45838.9824603470. The cubic root of 2101212313 is about 1280.8255402452.

Adding to 2101212313 its reverse (3132121012), we get a palindrome (5233333325).

The spelling of 2101212313 in words is "two billion, one hundred one million, two hundred twelve thousand, three hundred thirteen".