201221222222011 has 2 divisors, whose sum is σ = 201221222222012. Its totient is φ = 201221222222010.

The previous prime is 201221222221973. The next prime is 201221222222017. The reversal of 201221222222011 is 110222222122102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201221222222011 - 2¹⁹ = 201221221697723 is a prime.

It is not a weakly prime, because it can be changed into another prime (201221222222017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610611111005 + 100610611111006.

It is an arithmetic number, because the mean of its divisors is an integer number (100610611111006).

Almost surely, 2^{201221222222011} is an apocalyptic number.

201221222222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201221222222011 is an equidigital number, since it uses as much as digits as its factorization.

201221222222011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 201221222222011 its reverse (110222222122102), we get a palindrome (311443444344113).

Subtracting from 201221222222011 its reverse (110222222122102), we obtain a palindrome (90999000099909).

The spelling of 201221222222011 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, eleven".