1132121232181 has 2 divisors, whose sum is σ = 1132121232182. Its totient is φ = 1132121232180.

The previous prime is 1132121232103. The next prime is 1132121232227. The reversal of 1132121232181 is 1812321212311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776954102500 + 355167129681 = 881450^2 + 595959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1132121232181 - 2²⁷ = 1131987014453 is a prime.

It is a super-2 number, since 2×1132121232181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1132121232101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566060616090 + 566060616091.

It is an arithmetic number, because the mean of its divisors is an integer number (566060616091).

Almost surely, 2^{1132121232181} is an apocalyptic number.

It is an amenable number.

1132121232181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1132121232181 is an equidigital number, since it uses as much as digits as its factorization.

1132121232181 is an evil number, because the sum of its binary digits is even.

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

Adding to 1132121232181 its reverse (1812321212311), we get a palindrome (2944442444492).

The spelling of 1132121232181 in words is "one trillion, one hundred thirty-two billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred eighty-one".