2111122313 has 2 divisors, whose sum is σ = 2111122314. Its totient is φ = 2111122312.

The previous prime is 2111122297. The next prime is 2111122337. The reversal of 2111122313 is 3132211112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392185344 + 718936969 = 37312^2 + 26813^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111122313 - 2⁴ = 2111122297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111122291 and 2111122300.

It is not a weakly prime, because it can be changed into another prime (2111122913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055561156 + 1055561157.

It is an arithmetic number, because the mean of its divisors is an integer number (1055561157).

Almost surely, 2^2111122313 is an apocalyptic number.

It is an amenable number.

2111122313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111122313 is an equidigital number, since it uses as much as digits as its factorization.

2111122313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 2111122313 is about 45946.9510740375. The cubic root of 2111122313 is about 1282.8359793943.

Adding to 2111122313 its reverse (3132211112), we get a palindrome (5243333425).

The spelling of 2111122313 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, three hundred thirteen".