220200220021 has 4 divisors (see below), whose sum is σ = 223932427200. Its totient is φ = 216468012844.

The previous prime is 220200219973. The next prime is 220200220103. The reversal of 220200220021 is 120022002022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220200220021 - 2¹⁹ = 220199695733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220200219983 and 220200220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200220621) 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, 1866103501 + ... + 1866103618.

It is an arithmetic number, because the mean of its divisors is an integer number (55983106800).

Almost surely, 2^220200220021 is an apocalyptic number.

It is an amenable number.

220200220021 is a deficient number, since it is larger than the sum of its proper divisors (3732207179).

220200220021 is an equidigital number, since it uses as much as digits as its factorization.

220200220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732207178.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 220200220021 its reverse (120022002022), we get a palindrome (340222222043).

The spelling of 220200220021 in words is "two hundred twenty billion, two hundred million, two hundred twenty thousand, twenty-one".