110011122100021 has 8 divisors (see below), whose sum is σ = 112087245399480. Its totient is φ = 107935015161792.

The previous prime is 110011122099947. The next prime is 110011122100051. The reversal of 110011122100021 is 120001221110011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48556717110225 + 61454404989796 = 6968265^2 + 7839286^2 .

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 110011122100021 - 2²⁹ = 110010585229109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110011122099974 and 110011122100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110011122100051) 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, 9933835 + ... + 17852263.

It is an arithmetic number, because the mean of its divisors is an integer number (14010905674935).

Almost surely, 2^{110011122100021} is an apocalyptic number.

It is an amenable number.

110011122100021 is a deficient number, since it is larger than the sum of its proper divisors (2076123299459).

110011122100021 is an equidigital number, since it uses as much as digits as its factorization.

110011122100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180615.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110011122100021 its reverse (120001221110011), we get a palindrome (230012343210032).

The spelling of 110011122100021 in words is "one hundred ten trillion, eleven billion, one hundred twenty-two million, one hundred thousand, twenty-one".