100100010123 has 24 divisors (see below), whose sum is σ = 153617302800. Its totient is φ = 62690773824.

The previous prime is 100100010121. The next prime is 100100010151. The reversal of 100100010123 is 321010001001.

It is not a de Polignac number, because 100100010123 - 2¹ = 100100010121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100100010121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5173113 + ... + 5192426.

It is an arithmetic number, because the mean of its divisors is an integer number (6400720950).

Almost surely, 2^100100010123 is an apocalyptic number.

100100010123 is a deficient number, since it is larger than the sum of its proper divisors (53517292677).

100100010123 is a wasteful number, since it uses less digits than its factorization.

100100010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10365611 (or 10365608 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 100100010123 its reverse (321010001001), we get a palindrome (421110011124).

The spelling of 100100010123 in words is "one hundred billion, one hundred million, ten thousand, one hundred twenty-three".