12210021211181 has 2 divisors, whose sum is σ = 12210021211182. Its totient is φ = 12210021211180.

The previous prime is 12210021211147. The next prime is 12210021211207. The reversal of 12210021211181 is 18111212001221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10172718880900 + 2037302330281 = 3189470^2 + 1427341^2 .

It is an emirp because it is prime and its reverse (18111212001221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210021211181 - 2²² = 12210017016877 is a prime.

It is a super-2 number, since 2×12210021211181² (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 (12210021211081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105010605590 + 6105010605591.

It is an arithmetic number, because the mean of its divisors is an integer number (6105010605591).

Almost surely, 2^{12210021211181} is an apocalyptic number.

It is an amenable number.

12210021211181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210021211181 is an equidigital number, since it uses as much as digits as its factorization.

12210021211181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 23.

The spelling of 12210021211181 in words is "twelve trillion, two hundred ten billion, twenty-one million, two hundred eleven thousand, one hundred eighty-one".