221102210020 has 12 divisors (see below), whose sum is σ = 464314641084. Its totient is φ = 88440884000.

The previous prime is 221102210003. The next prime is 221102210033. The reversal of 221102210020 is 20012201122.

It is a happy number.

221102210020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 133044021504 + 88058188516 = 364752^2 + 296746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5527555231 + ... + 5527555270.

It is an arithmetic number, because the mean of its divisors is an integer number (38692886757).

Almost surely, 2^221102210020 is an apocalyptic number.

221102210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221102210020 is an abundant number, since it is smaller than the sum of its proper divisors (243212431064).

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

221102210020 is a wasteful number, since it uses less digits than its factorization.

221102210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055110510 (or 11055110508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221102210020 its reverse (20012201122), we get a palindrome (241114411142).

The spelling of 221102210020 in words is "two hundred twenty-one billion, one hundred two million, two hundred ten thousand, twenty".