220013022221 has 4 divisors (see below), whose sum is σ = 220045417212. Its totient is φ = 219980627232.

The previous prime is 220013022197. The next prime is 220013022223. The reversal of 220013022221 is 122220310022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122220310022 = 2 ⋅61110155011.

It can be written as a sum of positive squares in 2 ways, for example, as 12428905225 + 207584116996 = 111485^2 + 455614^2 .

It is a cyclic number.

It is not a de Polignac number, because 220013022221 - 2¹⁴ = 220013005837 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 220013022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220013022223) 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, 16187306 + ... + 16200891.

It is an arithmetic number, because the mean of its divisors is an integer number (55011354303).

Almost surely, 2^220013022221 is an apocalyptic number.

It is an amenable number.

220013022221 is a deficient number, since it is larger than the sum of its proper divisors (32394991).

220013022221 is an equidigital number, since it uses as much as digits as its factorization.

220013022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32394990.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 220013022221 its reverse (122220310022), we get a palindrome (342233332243).

The spelling of 220013022221 in words is "two hundred twenty billion, thirteen million, twenty-two thousand, two hundred twenty-one".