100403121111 has 16 divisors (see below), whose sum is σ = 134474256384. Its totient is φ = 66634020864.

The previous prime is 100403121097. The next prime is 100403121179. The reversal of 100403121111 is 111121304001.

It is not a de Polignac number, because 100403121111 - 2¹⁰ = 100403120087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100403121311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1243020 + ... + 1321326.

It is an arithmetic number, because the mean of its divisors is an integer number (8404641024).

Almost surely, 2^100403121111 is an apocalyptic number.

100403121111 is a deficient number, since it is larger than the sum of its proper divisors (34071135273).

100403121111 is a wasteful number, since it uses less digits than its factorization.

100403121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80230.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 100403121111 its reverse (111121304001), we get a palindrome (211524425112).

The spelling of 100403121111 in words is "one hundred billion, four hundred three million, one hundred twenty-one thousand, one hundred eleven".