1212110201111 has 2 divisors, whose sum is σ = 1212110201112. Its totient is φ = 1212110201110.

The previous prime is 1212110201087. The next prime is 1212110201131. The reversal of 1212110201111 is 1111020112121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212110201111 is a prime.

It is a super-2 number, since 2×1212110201111² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212110201131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606055100555 + 606055100556.

It is an arithmetic number, because the mean of its divisors is an integer number (606055100556).

Almost surely, 2^{1212110201111} is an apocalyptic number.

1212110201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212110201111 is an equidigital number, since it uses as much as digits as its factorization.

1212110201111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1212110201111 its reverse (1111020112121), we get a palindrome (2323130313232).

The spelling of 1212110201111 in words is "one trillion, two hundred twelve billion, one hundred ten million, two hundred one thousand, one hundred eleven".