222020200021 has 16 divisors (see below), whose sum is σ = 231395788800. Its totient is φ = 212883251328.

The previous prime is 222020200007. The next prime is 222020200037. The reversal of 222020200021 is 120002020222.

It is a cyclic number.

It is not a de Polignac number, because 222020200021 - 2⁷ = 222020199893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222020199974 and 222020200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222020200001) 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, 212476 + ... + 699418.

It is an arithmetic number, because the mean of its divisors is an integer number (14462236800).

Almost surely, 2^222020200021 is an apocalyptic number.

It is an amenable number.

222020200021 is a deficient number, since it is larger than the sum of its proper divisors (9375588779).

222020200021 is a wasteful number, since it uses less digits than its factorization.

222020200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487188.

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

Adding to 222020200021 its reverse (120002020222), we get a palindrome (342022220243).

The spelling of 222020200021 in words is "two hundred twenty-two billion, twenty million, two hundred thousand, twenty-one".