220002221021 has 16 divisors (see below), whose sum is σ = 240306393600. Its totient is φ = 199748900400.

The previous prime is 220002221017. The next prime is 220002221183. The reversal of 220002221021 is 120122200022.

It is a cyclic number.

It is not a de Polignac number, because 220002221021 - 2² = 220002221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220002220987 and 220002221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220002221321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38873690 + ... + 38879348.

It is an arithmetic number, because the mean of its divisors is an integer number (15019149600).

Almost surely, 2^220002221021 is an apocalyptic number.

It is an amenable number.

220002221021 is a deficient number, since it is larger than the sum of its proper divisors (20304172579).

220002221021 is a wasteful number, since it uses less digits than its factorization.

220002221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220002221021 its reverse (120122200022), we get a palindrome (340124421043).

The spelling of 220002221021 in words is "two hundred twenty billion, two million, two hundred twenty-one thousand, twenty-one".