2221201011611 has 2 divisors, whose sum is σ = 2221201011612. Its totient is φ = 2221201011610.

The previous prime is 2221201011553. The next prime is 2221201011637. The reversal of 2221201011611 is 1161101021222.

2221201011611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221201011611 - 2²⁶ = 2221133902747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2221201016611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110600505805 + 1110600505806.

It is an arithmetic number, because the mean of its divisors is an integer number (1110600505806).

Almost surely, 2^{2221201011611} is an apocalyptic number.

2221201011611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221201011611 is an equidigital number, since it uses as much as digits as its factorization.

2221201011611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 2221201011611 its reverse (1161101021222), we get a palindrome (3382302032833).

The spelling of 2221201011611 in words is "two trillion, two hundred twenty-one billion, two hundred one million, eleven thousand, six hundred eleven".