1012211210111 has 2 divisors, whose sum is σ = 1012211210112. Its totient is φ = 1012211210110.

The previous prime is 1012211210083. The next prime is 1012211210189. The reversal of 1012211210111 is 1110121122101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012211210111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012211210611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105605055 + 506105605056.

It is an arithmetic number, because the mean of its divisors is an integer number (506105605056).

Almost surely, 2^{1012211210111} is an apocalyptic number.

1012211210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012211210111 is an equidigital number, since it uses as much as digits as its factorization.

1012211210111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1012211210111 its reverse (1110121122101), we get a palindrome (2122332332212).

The spelling of 1012211210111 in words is "one trillion, twelve billion, two hundred eleven million, two hundred ten thousand, one hundred eleven".