20221020110321 has 4 divisors (see below), whose sum is σ = 20270460257700. Its totient is φ = 20171579962944.

The previous prime is 20221020110303. The next prime is 20221020110329. The reversal of 20221020110321 is 12301102012202.

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 18319555618225 + 1901464492096 = 4280135^2 + 1378936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20221020110321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20221020110321.

It is not an unprimeable number, because it can be changed into a prime (20221020110329) 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, 24720073076 + ... + 24720073893.

It is an arithmetic number, because the mean of its divisors is an integer number (5067615064425).

Almost surely, 2^{20221020110321} is an apocalyptic number.

It is an amenable number.

20221020110321 is a deficient number, since it is larger than the sum of its proper divisors (49440147379).

20221020110321 is an equidigital number, since it uses as much as digits as its factorization.

20221020110321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49440147378.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20221020110321 its reverse (12301102012202), we get a palindrome (32522122122523).

The spelling of 20221020110321 in words is "twenty trillion, two hundred twenty-one billion, twenty million, one hundred ten thousand, three hundred twenty-one".