220221022021 has 32 divisors (see below), whose sum is σ = 296040019968. Its totient is φ = 158208603840.

The previous prime is 220221022013. The next prime is 220221022027. The reversal of 220221022021 is 120220122022.

It is not a de Polignac number, because 220221022021 - 2³ = 220221022013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220221021986 and 220221022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221022027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694816 + ... + 960838.

It is an arithmetic number, because the mean of its divisors is an integer number (9251250624).

Almost surely, 2^220221022021 is an apocalyptic number.

It is an amenable number.

220221022021 is a deficient number, since it is larger than the sum of its proper divisors (75818997947).

220221022021 is a wasteful number, since it uses less digits than its factorization.

220221022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266881.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220221022021 its reverse (120220122022), we get a palindrome (340441144043).

The spelling of 220221022021 in words is "two hundred twenty billion, two hundred twenty-one million, twenty-two thousand, twenty-one".