2211201221011 has 2 divisors, whose sum is σ = 2211201221012. Its totient is φ = 2211201221010.

The previous prime is 2211201220979. The next prime is 2211201221017. The reversal of 2211201221011 is 1101221021122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2211201221011 - 2⁵ = 2211201220979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211201221017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105600610505 + 1105600610506.

It is an arithmetic number, because the mean of its divisors is an integer number (1105600610506).

Almost surely, 2^{2211201221011} is an apocalyptic number.

2211201221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211201221011 is an equidigital number, since it uses as much as digits as its factorization.

2211201221011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2211201221011 its reverse (1101221021122), we get a palindrome (3312422242133).

The spelling of 2211201221011 in words is "two trillion, two hundred eleven billion, two hundred one million, two hundred twenty-one thousand, eleven".