10020423022221 has 4 divisors (see below), whose sum is σ = 13360564029632. Its totient is φ = 6680282014812.

The previous prime is 10020423022213. The next prime is 10020423022223. The reversal of 10020423022221 is 12222032402001.

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 10020423022221 - 2³ = 10020423022213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020423022223) 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, 1670070503701 + ... + 1670070503706.

It is an arithmetic number, because the mean of its divisors is an integer number (3340141007408).

Almost surely, 2^{10020423022221} is an apocalyptic number.

It is an amenable number.

10020423022221 is a deficient number, since it is larger than the sum of its proper divisors (3340141007411).

10020423022221 is an equidigital number, since it uses as much as digits as its factorization.

10020423022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340141007410.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 10020423022221 its reverse (12222032402001), we get a palindrome (22242455424222).

The spelling of 10020423022221 in words is "ten trillion, twenty billion, four hundred twenty-three million, twenty-two thousand, two hundred twenty-one".