1212011111011 has 2 divisors, whose sum is σ = 1212011111012. Its totient is φ = 1212011111010.

The previous prime is 1212011110993. The next prime is 1212011111039. The reversal of 1212011111011 is 1101111102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212011111011 - 2¹⁷ = 1212010979939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212011110982 and 1212011111000.

It is not a weakly prime, because it can be changed into another prime (1212011111411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606005555505 + 606005555506.

It is an arithmetic number, because the mean of its divisors is an integer number (606005555506).

Almost surely, 2^{1212011111011} is an apocalyptic number.

1212011111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212011111011 is an equidigital number, since it uses as much as digits as its factorization.

1212011111011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1212011111011 its reverse (1101111102121), we get a palindrome (2313122213132).

The spelling of 1212011111011 in words is "one trillion, two hundred twelve billion, eleven million, one hundred eleven thousand, eleven".