2101223611 has 2 divisors, whose sum is σ = 2101223612. Its totient is φ = 2101223610.

The previous prime is 2101223563. The next prime is 2101223639. The reversal of 2101223611 is 1163221012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101223611 - 2⁹ = 2101223099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101223711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050611805 + 1050611806.

It is an arithmetic number, because the mean of its divisors is an integer number (1050611806).

Almost surely, 2^2101223611 is an apocalyptic number.

2101223611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101223611 is an equidigital number, since it uses as much as digits as its factorization.

2101223611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2101223611 is about 45839.1056959012. The cubic root of 2101223611 is about 1280.8278358630.

Adding to 2101223611 its reverse (1163221012), we get a palindrome (3264444623).

The spelling of 2101223611 in words is "two billion, one hundred one million, two hundred twenty-three thousand, six hundred eleven".