2211121313 has 2 divisors, whose sum is σ = 2211121314. Its totient is φ = 2211121312.

The previous prime is 2211121301. The next prime is 2211121321. The reversal of 2211121313 is 3131211122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2204114704 + 7006609 = 46948^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211121313 - 2³⁰ = 1137379489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211121291 and 2211121300.

It is not a weakly prime, because it can be changed into another prime (2211121343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105560656 + 1105560657.

It is an arithmetic number, because the mean of its divisors is an integer number (1105560657).

Almost surely, 2^2211121313 is an apocalyptic number.

It is an amenable number.

2211121313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211121313 is an equidigital number, since it uses as much as digits as its factorization.

2211121313 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 2211121313 is about 47022.5617443372. The cubic root of 2211121313 is about 1302.7793225756.

Adding to 2211121313 its reverse (3131211122), we get a palindrome (5342332435).

The spelling of 2211121313 in words is "two billion, two hundred eleven million, one hundred twenty-one thousand, three hundred thirteen".