110221102102021 has 4 divisors (see below), whose sum is σ = 110221188476652. Its totient is φ = 110221015727392.

The previous prime is 110221102101997. The next prime is 110221102102037. The reversal of 110221102102021 is 120201201122011.

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 2569894341921 + 107651207760100 = 1603089^2 + 10375510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110221102102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110221102101986 and 110221102102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110221102102091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41244046 + ... + 43835071.

It is an arithmetic number, because the mean of its divisors is an integer number (27555297119163).

Almost surely, 2^{110221102102021} is an apocalyptic number.

It is an amenable number.

110221102102021 is a deficient number, since it is larger than the sum of its proper divisors (86374631).

110221102102021 is an equidigital number, since it uses as much as digits as its factorization.

110221102102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86374630.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 110221102102021 its reverse (120201201122011), we get a palindrome (230422303224032).

The spelling of 110221102102021 in words is "one hundred ten trillion, two hundred twenty-one billion, one hundred two million, one hundred two thousand, twenty-one".