220221021022201 has 4 divisors (see below), whose sum is σ = 220222272333172. Its totient is φ = 220219769711232.

The previous prime is 220221021022199. The next prime is 220221021022207. The reversal of 220221021022201 is 102220120122022.

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 40808792606976 + 179412228415225 = 6388176^2 + 13394485^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221021022201 - 2¹ = 220221021022199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220221021022207) 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, 625391460 + ... + 625743493.

It is an arithmetic number, because the mean of its divisors is an integer number (55055568083293).

Almost surely, 2^{220221021022201} is an apocalyptic number.

It is an amenable number.

220221021022201 is a deficient number, since it is larger than the sum of its proper divisors (1251310971).

220221021022201 is a wasteful number, since it uses less digits than its factorization.

220221021022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251310970.

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

Adding to 220221021022201 its reverse (102220120122022), we get a palindrome (322441141144223).

The spelling of 220221021022201 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-one million, twenty-two thousand, two hundred one".