121113222101987 has 2 divisors, whose sum is σ = 121113222101988. Its totient is φ = 121113222101986.

The previous prime is 121113222101933. The next prime is 121113222102001. The reversal of 121113222101987 is 789101222311121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121113222101987 is a prime.

It is not a weakly prime, because it can be changed into another prime (121113222101917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556611050993 + 60556611050994.

It is an arithmetic number, because the mean of its divisors is an integer number (60556611050994).

Almost surely, 2^{121113222101987} is an apocalyptic number.

121113222101987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113222101987 is an equidigital number, since it uses as much as digits as its factorization.

121113222101987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 41.

The spelling of 121113222101987 in words is "one hundred twenty-one trillion, one hundred thirteen billion, two hundred twenty-two million, one hundred one thousand, nine hundred eighty-seven".