110020221021 has 4 divisors (see below), whose sum is σ = 146693628032. Its totient is φ = 73346814012.

The previous prime is 110020220969. The next prime is 110020221029. The reversal of 110020221021 is 120122020011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 110020221021 - 2⁶ = 110020220957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110020220988 and 110020221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110020221029) 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, 18336703501 + ... + 18336703506.

It is an arithmetic number, because the mean of its divisors is an integer number (36673407008).

Almost surely, 2^110020221021 is an apocalyptic number.

It is an amenable number.

110020221021 is a deficient number, since it is larger than the sum of its proper divisors (36673407011).

110020221021 is an equidigital number, since it uses as much as digits as its factorization.

110020221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36673407010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 110020221021 its reverse (120122020011), we get a palindrome (230142241032).

The spelling of 110020221021 in words is "one hundred ten billion, twenty million, two hundred twenty-one thousand, twenty-one".