10220236643221 has 4 divisors (see below), whose sum is σ = 11149349065344. Its totient is φ = 9291124221100.

The previous prime is 10220236643219. The next prime is 10220236643249. The reversal of 10220236643221 is 12234663202201.

10220236643221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 10220236643221 - 2¹ = 10220236643219 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 (10220236643021) 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, 464556211045 + ... + 464556211066.

It is an arithmetic number, because the mean of its divisors is an integer number (2787337266336).

Almost surely, 2^{10220236643221} is an apocalyptic number.

10220236643221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10220236643221 is a deficient number, since it is larger than the sum of its proper divisors (929112422123).

10220236643221 is an equidigital number, since it uses as much as digits as its factorization.

10220236643221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929112422122.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 10220236643221 its reverse (12234663202201), we get a palindrome (22454899845422).

The spelling of 10220236643221 in words is "ten trillion, two hundred twenty billion, two hundred thirty-six million, six hundred forty-three thousand, two hundred twenty-one".