100111101010873 has 2 divisors, whose sum is σ = 100111101010874. Its totient is φ = 100111101010872.

The previous prime is 100111101010831. The next prime is 100111101010931. The reversal of 100111101010873 is 378010101111001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82806141644944 + 17304959365929 = 9099788^2 + 4159923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100111101010873 is a prime.

It is not a weakly prime, because it can be changed into another prime (100111101010813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055550505436 + 50055550505437.

It is an arithmetic number, because the mean of its divisors is an integer number (50055550505437).

Almost surely, 2^{100111101010873} is an apocalyptic number.

It is an amenable number.

100111101010873 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111101010873 is an equidigital number, since it uses as much as digits as its factorization.

100111101010873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 25.

Adding to 100111101010873 its reverse (378010101111001), we get a palindrome (478121202121874).

The spelling of 100111101010873 in words is "one hundred trillion, one hundred eleven billion, one hundred one million, ten thousand, eight hundred seventy-three".