10000220301221 has 4 divisors (see below), whose sum is σ = 10588468554252. Its totient is φ = 9411972048192.

The previous prime is 10000220301199. The next prime is 10000220301241. The reversal of 10000220301221 is 12210302200001.

It is a happy number.

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 3247960884100 + 6752259417121 = 1802210^2 + 2598511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10000220301221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000220301196 and 10000220301205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000220301241) 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, 294124126490 + ... + 294124126523.

It is an arithmetic number, because the mean of its divisors is an integer number (2647117138563).

Almost surely, 2^{10000220301221} is an apocalyptic number.

It is an amenable number.

10000220301221 is a deficient number, since it is larger than the sum of its proper divisors (588248253031).

10000220301221 is an equidigital number, since it uses as much as digits as its factorization.

10000220301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588248253030.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10000220301221 its reverse (12210302200001), we get a palindrome (22210522501222).

The spelling of 10000220301221 in words is "ten trillion, two hundred twenty million, three hundred one thousand, two hundred twenty-one".