100120012103 has 4 divisors (see below), whose sum is σ = 100121206920. Its totient is φ = 100118817288.

The previous prime is 100120012093. The next prime is 100120012163. The reversal of 100120012103 is 301210021001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301210021001 = 151 ⋅1994768351.

It is a cyclic number.

It is not a de Polignac number, because 100120012103 - 2⁴ = 100120012087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120012163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461393 + ... + 642746.

It is an arithmetic number, because the mean of its divisors is an integer number (25030301730).

Almost surely, 2^100120012103 is an apocalyptic number.

100120012103 is a deficient number, since it is larger than the sum of its proper divisors (1194817).

100120012103 is an equidigital number, since it uses as much as digits as its factorization.

100120012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194816.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 100120012103 its reverse (301210021001), we get a palindrome (401330033104).

The spelling of 100120012103 in words is "one hundred billion, one hundred twenty million, twelve thousand, one hundred three".