12212212232081 has 2 divisors, whose sum is σ = 12212212232082. Its totient is φ = 12212212232080.

The previous prime is 12212212232057. The next prime is 12212212232111. The reversal of 12212212232081 is 18023221221221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8087084688400 + 4125127543681 = 2843780^2 + 2031041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212212232081 is a prime.

It is a super-2 number, since 2×12212212232081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12212212232281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106106116040 + 6106106116041.

It is an arithmetic number, because the mean of its divisors is an integer number (6106106116041).

Almost surely, 2^{12212212232081} is an apocalyptic number.

It is an amenable number.

12212212232081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212212232081 is an equidigital number, since it uses as much as digits as its factorization.

12212212232081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

The spelling of 12212212232081 in words is "twelve trillion, two hundred twelve billion, two hundred twelve million, two hundred thirty-two thousand, eighty-one".