221102202202020 has 72 divisors (see below), whose sum is σ = 670713827958720. Its totient is φ = 58957321500480.

The previous prime is 221102202202019. The next prime is 221102202202033. The reversal of 221102202202020 is 20202202201122.

221102202202020 is a `hidden beast` number, since 2 + 21 + 1 + 0 + 220 + 220 + 202 + 0 = 666.

221102202202020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221102202201984 and 221102202202002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30758616 + ... + 37259855.

It is an arithmetic number, because the mean of its divisors is an integer number (9315469832760).

Almost surely, 2^{221102202202020} is an apocalyptic number.

221102202202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221102202202020 is an abundant number, since it is smaller than the sum of its proper divisors (449611625756700).

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

221102202202020 is a wasteful number, since it uses less digits than its factorization.

221102202202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68036545 (or 68036540 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221102202202020 its reverse (20202202201122), we get a palindrome (241304404403142).

The spelling of 221102202202020 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred two million, two hundred two thousand, twenty".