12212021133181 has 2 divisors, whose sum is σ = 12212021133182. Its totient is φ = 12212021133180.

The previous prime is 12212021133113. The next prime is 12212021133233. The reversal of 12212021133181 is 18133112021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11352627241956 + 859393891225 = 3369366^2 + 927035^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212021133181 - 2²⁹ = 12211484262269 is a prime.

It is a super-2 number, since 2×12212021133181² (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 (12212021133881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106010566590 + 6106010566591.

It is an arithmetic number, because the mean of its divisors is an integer number (6106010566591).

Almost surely, 2^{12212021133181} is an apocalyptic number.

It is an amenable number.

12212021133181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212021133181 is an equidigital number, since it uses as much as digits as its factorization.

12212021133181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 12212021133181 in words is "twelve trillion, two hundred twelve billion, twenty-one million, one hundred thirty-three thousand, one hundred eighty-one".