220220220221021 has 8 divisors (see below), whose sum is σ = 220823524917600. Its totient is φ = 219616984519632.

The previous prime is 220220220221017. The next prime is 220220220221059. The reversal of 220220220221021 is 120122022022022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220220220221021 - 2² = 220220220221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220220220220984 and 220220220221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220220223021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10853171 + ... + 23626928.

It is an arithmetic number, because the mean of its divisors is an integer number (27602940614700).

Almost surely, 2^{220220220221021} is an apocalyptic number.

It is an amenable number.

220220220221021 is a deficient number, since it is larger than the sum of its proper divisors (603304696579).

220220220221021 is a wasteful number, since it uses less digits than its factorization.

220220220221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34497595.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 220220220221021 its reverse (120122022022022), we get a palindrome (340342242243043).

The spelling of 220220220221021 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, twenty-one".