121326582187 has 2 divisors, whose sum is σ = 121326582188. Its totient is φ = 121326582186.

The previous prime is 121326582161. The next prime is 121326582197. The reversal of 121326582187 is 781285623121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121326582187 - 2⁷ = 121326582059 is a prime.

It is not a weakly prime, because it can be changed into another prime (121326582197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60663291093 + 60663291094.

It is an arithmetic number, because the mean of its divisors is an integer number (60663291094).

Almost surely, 2^121326582187 is an apocalyptic number.

121326582187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121326582187 is an equidigital number, since it uses as much as digits as its factorization.

121326582187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The spelling of 121326582187 in words is "one hundred twenty-one billion, three hundred twenty-six million, five hundred eighty-two thousand, one hundred eighty-seven".