10220222221021 has 4 divisors (see below), whose sum is σ = 10821411763452. Its totient is φ = 9619032678592.

The previous prime is 10220222220997. The next prime is 10220222221031. The reversal of 10220222221021 is 12012222202201.

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 6064699200921 + 4155523020100 = 2462661^2 + 2038510^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220222221021 - 2¹⁹ = 10220221696733 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 10220222221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220222221031) 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, 300594771190 + ... + 300594771223.

It is an arithmetic number, because the mean of its divisors is an integer number (2705352940863).

Almost surely, 2^{10220222221021} is an apocalyptic number.

It is an amenable number.

10220222221021 is a deficient number, since it is larger than the sum of its proper divisors (601189542431).

10220222221021 is an equidigital number, since it uses as much as digits as its factorization.

10220222221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601189542430.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10220222221021 its reverse (12012222202201), we get a palindrome (22232444423222).

The spelling of 10220222221021 in words is "ten trillion, two hundred twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".