221100110211020 has 24 divisors (see below), whose sum is σ = 464310581346864. Its totient is φ = 88439977436096.

The previous prime is 221100110210999. The next prime is 221100110211037. The reversal of 221100110211020 is 20112011001122.

221100110211020 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 = 221100110210986 and 221100110211004.

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, 29787134 + ... + 36461946.

It is an arithmetic number, because the mean of its divisors is an integer number (19346274222786).

Almost surely, 2^{221100110211020} is an apocalyptic number.

221100110211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100110211020 is an abundant number, since it is smaller than the sum of its proper divisors (243210471135844).

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

221100110211020 is a wasteful number, since it uses less digits than its factorization.

221100110211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8331049 (or 8331047 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221100110211020 its reverse (20112011001122), we get a palindrome (241212121212142).

The spelling of 221100110211020 in words is "two hundred twenty-one trillion, one hundred billion, one hundred ten million, two hundred eleven thousand, twenty".