100120110100987 has 2 divisors, whose sum is σ = 100120110100988. Its totient is φ = 100120110100986.

The previous prime is 100120110100909. The next prime is 100120110101071. The reversal of 100120110100987 is 789001011021001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100120110100987 - 2¹⁹ = 100120109576699 is a prime.

It is not a weakly prime, because it can be changed into another prime (100120110100687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060055050493 + 50060055050494.

It is an arithmetic number, because the mean of its divisors is an integer number (50060055050494).

Almost surely, 2^{100120110100987} is an apocalyptic number.

100120110100987 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120110100987 is an equidigital number, since it uses as much as digits as its factorization.

100120110100987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 31.

Adding to 100120110100987 its reverse (789001011021001), we get a palindrome (889121121121988).

The spelling of 100120110100987 in words is "one hundred trillion, one hundred twenty billion, one hundred ten million, one hundred thousand, nine hundred eighty-seven".