121000121119987 has 2 divisors, whose sum is σ = 121000121119988. Its totient is φ = 121000121119986.

The previous prime is 121000121119967. The next prime is 121000121120003. The reversal of 121000121119987 is 789911121000121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000121119987 is a prime.

It is a super-2 number, since 2×121000121119987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121000121119907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500060559993 + 60500060559994.

It is an arithmetic number, because the mean of its divisors is an integer number (60500060559994).

Almost surely, 2^{121000121119987} is an apocalyptic number.

121000121119987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000121119987 is an equidigital number, since it uses as much as digits as its factorization.

121000121119987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 43.

The spelling of 121000121119987 in words is "one hundred twenty-one trillion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred eighty-seven".