110021221000001 has 4 divisors (see below), whose sum is σ = 110023426900692. Its totient is φ = 110019015099312.

The previous prime is 110021220999997. The next prime is 110021221000003. The reversal of 110021221000001 is 100000122120011.

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 14621071710001 + 95400149290000 = 3823751^2 + 9767300^2 .

It is a cyclic number.

It is not a de Polignac number, because 110021221000001 - 2² = 110021220999997 is a prime.

It is a super-2 number, since 2×110021221000001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110021221000003) 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, 1102875530 + ... + 1102975283.

It is an arithmetic number, because the mean of its divisors is an integer number (27505856725173).

Almost surely, 2^{110021221000001} is an apocalyptic number.

It is an amenable number.

110021221000001 is a deficient number, since it is larger than the sum of its proper divisors (2205900691).

110021221000001 is an equidigital number, since it uses as much as digits as its factorization.

110021221000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205900690.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110021221000001 its reverse (100000122120011), we get a palindrome (210021343120012).

The spelling of 110021221000001 in words is "one hundred ten trillion, twenty-one billion, two hundred twenty-one million, one", and thus it is an aban number.