1131011220211 has 2 divisors, whose sum is σ = 1131011220212. Its totient is φ = 1131011220210.

The previous prime is 1131011220103. The next prime is 1131011220221. The reversal of 1131011220211 is 1120221101311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131011220211 - 2¹¹ = 1131011218163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131011220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565505610105 + 565505610106.

It is an arithmetic number, because the mean of its divisors is an integer number (565505610106).

Almost surely, 2^{1131011220211} is an apocalyptic number.

1131011220211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131011220211 is an equidigital number, since it uses as much as digits as its factorization.

1131011220211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1131011220211 its reverse (1120221101311), we get a palindrome (2251232321522).

The spelling of 1131011220211 in words is "one trillion, one hundred thirty-one billion, eleven million, two hundred twenty thousand, two hundred eleven".