221000101120 has 72 divisors (see below), whose sum is σ = 546440670720. Its totient is φ = 85548410880.

The previous prime is 221000101103. The next prime is 221000101171. The reversal of 221000101120 is 21101000122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 221000101097 and 221000101106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2745100 + ... + 2824459.

It is an arithmetic number, because the mean of its divisors is an integer number (7589453760).

Almost surely, 2^221000101120 is an apocalyptic number.

221000101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000101120 is an abundant number, since it is smaller than the sum of its proper divisors (325440569600).

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

221000101120 is an equidigital number, since it uses as much as digits as its factorization.

221000101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569611 (or 5569597 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221000101120 its reverse (21101000122), we get a palindrome (242101101242).

The spelling of 221000101120 in words is "two hundred twenty-one billion, one hundred one thousand, one hundred twenty".