100011121187 has 2 divisors, whose sum is σ = 100011121188. Its totient is φ = 100011121186.

The previous prime is 100011121157. The next prime is 100011121213. The reversal of 100011121187 is 781121110001.

It is a strong prime.

It is an emirp because it is prime and its reverse (781121110001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100011121187 - 2¹² = 100011117091 is a prime.

It is a super-2 number, since 2×100011121187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100011121127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005560593 + 50005560594.

It is an arithmetic number, because the mean of its divisors is an integer number (50005560594).

Almost surely, 2^100011121187 is an apocalyptic number.

100011121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

100011121187 is an equidigital number, since it uses as much as digits as its factorization.

100011121187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 23.

Adding to 100011121187 its reverse (781121110001), we get a palindrome (881132231188).

The spelling of 100011121187 in words is "one hundred billion, eleven million, one hundred twenty-one thousand, one hundred eighty-seven".