220021122032201 has 6 divisors (see below), whose sum is σ = 255942937874250. Its totient is φ = 188589533170416.

The previous prime is 220021122032189. The next prime is 220021122032209. The reversal of 220021122032201 is 102230221120022.

It can be written as a sum of positive squares in only one way, i.e., 210527476489225 + 9493645542976 = 14509565^2 + 3081176^2 .

It is not a de Polignac number, because 220021122032201 - 2¹⁸ = 220021121770057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021122032209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2245113490076 + ... + 2245113490173.

It is an arithmetic number, because the mean of its divisors is an integer number (42657156312375).

Almost surely, 2^{220021122032201} is an apocalyptic number.

It is an amenable number.

220021122032201 is a deficient number, since it is larger than the sum of its proper divisors (35921815842049).

220021122032201 is an equidigital number, since it uses as much as digits as its factorization.

220021122032201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490226980263 (or 4490226980256 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 220021122032201 its reverse (102230221120022), we get a palindrome (322251343152223).

The spelling of 220021122032201 in words is "two hundred twenty trillion, twenty-one billion, one hundred twenty-two million, thirty-two thousand, two hundred one".