110011100221021 has 4 divisors (see below), whose sum is σ = 111814560880444. Its totient is φ = 108207639561600.

The previous prime is 110011100220997. The next prime is 110011100221063. The reversal of 110011100221021 is 120122001110011.

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 56199926148921 + 53811174072100 = 7496661^2 + 7335610^2 .

It is a cyclic number.

It is not a de Polignac number, because 110011100221021 - 2⁷ = 110011100220893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110011100220992 and 110011100221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110011100224021) 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, 901730329620 + ... + 901730329741.

It is an arithmetic number, because the mean of its divisors is an integer number (27953640220111).

Almost surely, 2^{110011100221021} is an apocalyptic number.

It is an amenable number.

110011100221021 is a deficient number, since it is larger than the sum of its proper divisors (1803460659423).

110011100221021 is an equidigital number, since it uses as much as digits as its factorization.

110011100221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803460659422.

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

Adding to 110011100221021 its reverse (120122001110011), we get a palindrome (230133101331032).

The spelling of 110011100221021 in words is "one hundred ten trillion, eleven billion, one hundred million, two hundred twenty-one thousand, twenty-one".