100111021110021 has 16 divisors (see below), whose sum is σ = 134039353462784. Its totient is φ = 66462084747504.

The previous prime is 100111021109999. The next prime is 100111021110071. The reversal of 100111021110021 is 120011120111001.

It is not a de Polignac number, because 100111021110021 - 2¹⁰ = 100111021108997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111021109979 and 100111021110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111021110071) 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, 48998035 + ... + 51000288.

It is an arithmetic number, because the mean of its divisors is an integer number (8377459591424).

Almost surely, 2^{100111021110021} is an apocalyptic number.

It is an amenable number.

100111021110021 is a deficient number, since it is larger than the sum of its proper divisors (33928332352763).

100111021110021 is a wasteful number, since it uses less digits than its factorization.

100111021110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99999720.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 100111021110021 its reverse (120011120111001), we get a palindrome (220122141221022).

The spelling of 100111021110021 in words is "one hundred trillion, one hundred eleven billion, twenty-one million, one hundred ten thousand, twenty-one".