12011212010101 has 2 divisors, whose sum is σ = 12011212010102. Its totient is φ = 12011212010100.

The previous prime is 12011212010071. The next prime is 12011212010107. The reversal of 12011212010101 is 10101021211021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8320974852100 + 3690237158001 = 2884610^2 + 1920999^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011212010101 - 2⁵ = 12011212010069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011212010107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005606005050 + 6005606005051.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606005051).

Almost surely, 2^{12011212010101} is an apocalyptic number.

It is an amenable number.

12011212010101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011212010101 is an equidigital number, since it uses as much as digits as its factorization.

12011212010101 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 13.

Adding to 12011212010101 its reverse (10101021211021), we get a palindrome (22112233221122).

The spelling of 12011212010101 in words is "twelve trillion, eleven billion, two hundred twelve million, ten thousand, one hundred one".