1012111111211 has 2 divisors, whose sum is σ = 1012111111212. Its totient is φ = 1012111111210.

The previous prime is 1012111111171. The next prime is 1012111111237. The reversal of 1012111111211 is 1121111112101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012111111211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012111111111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506055555605 + 506055555606.

It is an arithmetic number, because the mean of its divisors is an integer number (506055555606).

Almost surely, 2^{1012111111211} is an apocalyptic number.

1012111111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012111111211 is an equidigital number, since it uses as much as digits as its factorization.

1012111111211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 1012111111211 its reverse (1121111112101), we get a palindrome (2133222223312).

The spelling of 1012111111211 in words is "one trillion, twelve billion, one hundred eleven million, one hundred eleven thousand, two hundred eleven".