12011212219997 has 2 divisors, whose sum is σ = 12011212219998. Its totient is φ = 12011212219996.

The previous prime is 12011212219943. The next prime is 12011212220017. The reversal of 12011212219997 is 79991221211021.

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., 11004041410756 + 1007170809241 = 3317234^2 + 1003579^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011212219997 - 2¹⁸ = 12011211957853 is a prime.

It is a super-2 number, since 2×12011212219997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011412219997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005606109998 + 6005606109999.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606109999).

Almost surely, 2^{12011212219997} is an apocalyptic number.

It is an amenable number.

12011212219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011212219997 is an equidigital number, since it uses as much as digits as its factorization.

12011212219997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 47.

The spelling of 12011212219997 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred nineteen thousand, nine hundred ninety-seven".