111210220131211 has 2 divisors, whose sum is σ = 111210220131212. Its totient is φ = 111210220131210.

The previous prime is 111210220131193. The next prime is 111210220131217. The reversal of 111210220131211 is 112131022012111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111210220131211 - 2¹⁵ = 111210220098443 is a prime.

It is not a weakly prime, because it can be changed into another prime (111210220131217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605110065605 + 55605110065606.

It is an arithmetic number, because the mean of its divisors is an integer number (55605110065606).

Almost surely, 2^{111210220131211} is an apocalyptic number.

111210220131211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210220131211 is an equidigital number, since it uses as much as digits as its factorization.

111210220131211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 111210220131211 its reverse (112131022012111), we get a palindrome (223341242143322).

The spelling of 111210220131211 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twenty million, one hundred thirty-one thousand, two hundred eleven".