2215111243 has 2 divisors, whose sum is σ = 2215111244. Its totient is φ = 2215111242.

The previous prime is 2215111229. The next prime is 2215111247. The reversal of 2215111243 is 3421115122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2215111243 - 2⁵ = 2215111211 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215111247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107555621 + 1107555622.

It is an arithmetic number, because the mean of its divisors is an integer number (1107555622).

Almost surely, 2^2215111243 is an apocalyptic number.

2215111243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215111243 is an equidigital number, since it uses as much as digits as its factorization.

2215111243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 2215111243 is about 47064.9683203973. The cubic root of 2215111243 is about 1303.5624659271.

Adding to 2215111243 its reverse (3421115122), we get a palindrome (5636226365).

The spelling of 2215111243 in words is "two billion, two hundred fifteen million, one hundred eleven thousand, two hundred forty-three".