110021221021 has 16 divisors (see below), whose sum is σ = 115022907648. Its totient is φ = 105132484800.

The previous prime is 110021220989. The next prime is 110021221067. The reversal of 110021221021 is 120122120011.

It is a cyclic number.

It is not a de Polignac number, because 110021221021 - 2⁵ = 110021220989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110021220992 and 110021221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021222021) 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, 5529631 + ... + 5549491.

It is an arithmetic number, because the mean of its divisors is an integer number (7188931728).

Almost surely, 2^110021221021 is an apocalyptic number.

It is an amenable number.

110021221021 is a deficient number, since it is larger than the sum of its proper divisors (5001686627).

110021221021 is a wasteful number, since it uses less digits than its factorization.

110021221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22692.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 110021221021 its reverse (120122120011), we get a palindrome (230143341032).

The spelling of 110021221021 in words is "one hundred ten billion, twenty-one million, two hundred twenty-one thousand, twenty-one".