221021011000220 has 24 divisors (see below), whose sum is σ = 464410719453408. Its totient is φ = 88357624142400.

The previous prime is 221021011000201. The next prime is 221021011000271. The reversal of 221021011000220 is 22000110120122.

221021011000220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221021011000195 and 221021011000204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3173730416 + ... + 3173800055.

It is an arithmetic number, because the mean of its divisors is an integer number (19350446643892).

Almost surely, 2^{221021011000220} is an apocalyptic number.

221021011000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221021011000220 is an abundant number, since it is smaller than the sum of its proper divisors (243389708453188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221021011000220 is a wasteful number, since it uses less digits than its factorization.

221021011000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347532221 (or 6347532219 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221021011000220 its reverse (22000110120122), we get a palindrome (243021121120342).

The spelling of 221021011000220 in words is "two hundred twenty-one trillion, twenty-one billion, eleven million, two hundred twenty", and thus it is an aban number.