100111110521 has 8 divisors (see below), whose sum is σ = 100866841320. Its totient is φ = 99355742208.

The previous prime is 100111110443. The next prime is 100111110577. The reversal of 100111110521 is 125011111001.

It can be written as a sum of positive squares in 4 ways, for example, as 9714073600 + 90397036921 = 98560^2 + 300661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100111110521 - 2¹⁴ = 100111094137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111110496 and 100111110505.

It is not an unprimeable number, because it can be changed into a prime (100111160521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477185 + ... + 654161.

It is an arithmetic number, because the mean of its divisors is an integer number (12608355165).

Almost surely, 2^100111110521 is an apocalyptic number.

It is an amenable number.

100111110521 is a deficient number, since it is larger than the sum of its proper divisors (755730799).

100111110521 is a wasteful number, since it uses less digits than its factorization.

100111110521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181243.

The product of its (nonzero) digits is 10, while the sum is 14.

Adding to 100111110521 its reverse (125011111001), we get a palindrome (225122221522).

The spelling of 100111110521 in words is "one hundred billion, one hundred eleven million, one hundred ten thousand, five hundred twenty-one".