121232122181 has 2 divisors, whose sum is σ = 121232122182. Its totient is φ = 121232122180.

The previous prime is 121232122169. The next prime is 121232122201. The reversal of 121232122181 is 181221232121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85854274081 + 35377848100 = 293009^2 + 188090^2 .

It is a cyclic number.

It is not a de Polignac number, because 121232122181 - 2²⁶ = 121165013317 is a prime.

It is a super-2 number, since 2×121232122181² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121232122181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121232122381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616061090 + 60616061091.

It is an arithmetic number, because the mean of its divisors is an integer number (60616061091).

Almost surely, 2^121232122181 is an apocalyptic number.

It is an amenable number.

121232122181 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232122181 is an equidigital number, since it uses as much as digits as its factorization.

121232122181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 26.

The spelling of 121232122181 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred twenty-two thousand, one hundred eighty-one".