221021020022 has 8 divisors (see below), whose sum is σ = 361670760072. Its totient is φ = 100464100000.

The previous prime is 221021020021. The next prime is 221021020039. The reversal of 221021020022 is 220020120122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221021019979 and 221021020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5023204979 + ... + 5023205022.

It is an arithmetic number, because the mean of its divisors is an integer number (45208845009).

Almost surely, 2^221021020022 is an apocalyptic number.

221021020022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221021020022 is a deficient number, since it is larger than the sum of its proper divisors (140649740050).

221021020022 is a wasteful number, since it uses less digits than its factorization.

221021020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10046410014.

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

Adding to 221021020022 its reverse (220020120122), we get a palindrome (441041140144).

The spelling of 221021020022 in words is "two hundred twenty-one billion, twenty-one million, twenty thousand, twenty-two".