121469881987 has 2 divisors, whose sum is σ = 121469881988. Its totient is φ = 121469881986.

The previous prime is 121469881969. The next prime is 121469882033. The reversal of 121469881987 is 789188964121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121469881987 - 2⁷ = 121469881859 is a prime.

It is not a weakly prime, because it can be changed into another prime (121469881937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60734940993 + 60734940994.

It is an arithmetic number, because the mean of its divisors is an integer number (60734940994).

Almost surely, 2^121469881987 is an apocalyptic number.

121469881987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121469881987 is an equidigital number, since it uses as much as digits as its factorization.

121469881987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 64.

The spelling of 121469881987 in words is "one hundred twenty-one billion, four hundred sixty-nine million, eight hundred eighty-one thousand, nine hundred eighty-seven".