121552041181 has 2 divisors, whose sum is σ = 121552041182. Its totient is φ = 121552041180.

The previous prime is 121552041161. The next prime is 121552041269. The reversal of 121552041181 is 181140255121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120155823225 + 1396217956 = 346635^2 + 37366^2 .

It is a cyclic number.

It is not a de Polignac number, because 121552041181 - 2⁷ = 121552041053 is a prime.

It is a super-2 number, since 2×121552041181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121552041101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60776020590 + 60776020591.

It is an arithmetic number, because the mean of its divisors is an integer number (60776020591).

Almost surely, 2^121552041181 is an apocalyptic number.

It is an amenable number.

121552041181 is a deficient number, since it is larger than the sum of its proper divisors (1).

121552041181 is an equidigital number, since it uses as much as digits as its factorization.

121552041181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 31.

The spelling of 121552041181 in words is "one hundred twenty-one billion, five hundred fifty-two million, forty-one thousand, one hundred eighty-one".