121754013187 has 2 divisors, whose sum is σ = 121754013188. Its totient is φ = 121754013186.

The previous prime is 121754013131. The next prime is 121754013223. The reversal of 121754013187 is 781310457121.

It is a strong prime.

It is an emirp because it is prime and its reverse (781310457121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121754013187 - 2¹¹ = 121754011139 is a prime.

It is not a weakly prime, because it can be changed into another prime (121754013127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60877006593 + 60877006594.

It is an arithmetic number, because the mean of its divisors is an integer number (60877006594).

Almost surely, 2^121754013187 is an apocalyptic number.

121754013187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121754013187 is an equidigital number, since it uses as much as digits as its factorization.

121754013187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 121754013187 in words is "one hundred twenty-one billion, seven hundred fifty-four million, thirteen thousand, one hundred eighty-seven".