100111010123 has 2 divisors, whose sum is σ = 100111010124. Its totient is φ = 100111010122.

The previous prime is 100111010101. The next prime is 100111010137. The reversal of 100111010123 is 321010111001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100111010123 - 2¹² = 100111006027 is a prime.

It is not a weakly prime, because it can be changed into another prime (100111010023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055505061 + 50055505062.

It is an arithmetic number, because the mean of its divisors is an integer number (50055505062).

Almost surely, 2^100111010123 is an apocalyptic number.

100111010123 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111010123 is an equidigital number, since it uses as much as digits as its factorization.

100111010123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 100111010123 its reverse (321010111001), we get a palindrome (421121121124).

The spelling of 100111010123 in words is "one hundred billion, one hundred eleven million, ten thousand, one hundred twenty-three".