101100110021 has 4 divisors (see below), whose sum is σ = 101389795500. Its totient is φ = 100810424544.

The previous prime is 101100110009. The next prime is 101100110071. The reversal of 101100110021 is 120011001101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25884304996 + 75215805025 = 160886^2 + 274255^2 .

It is a cyclic number.

It is not a de Polignac number, because 101100110021 - 2²² = 101095915717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101100109990 and 101100110008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100110071) 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, 144842216 + ... + 144842913.

It is an arithmetic number, because the mean of its divisors is an integer number (25347448875).

Almost surely, 2^101100110021 is an apocalyptic number.

It is an amenable number.

101100110021 is a deficient number, since it is larger than the sum of its proper divisors (289685479).

101100110021 is an equidigital number, since it uses as much as digits as its factorization.

101100110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289685478.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 101100110021 its reverse (120011001101), we get a palindrome (221111111122).

The spelling of 101100110021 in words is "one hundred one billion, one hundred million, one hundred ten thousand, twenty-one".