221220200222020 has 24 divisors (see below), whose sum is σ = 464562859219200. Its totient is φ = 88487996516832.

The previous prime is 221220200222011. The next prime is 221220200222051. The reversal of 221220200222020 is 20222002022122.

221220200222020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 19288171 + ... + 28538989.

It is an arithmetic number, because the mean of its divisors is an integer number (19356785800800).

Almost surely, 2^{221220200222020} is an apocalyptic number.

221220200222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221220200222020 is an abundant number, since it is smaller than the sum of its proper divisors (243342658997180).

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

221220200222020 is a wasteful number, since it uses less digits than its factorization.

221220200222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10446507 (or 10446505 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 221220200222020 its reverse (20222002022122), we get a palindrome (241442202244142).

The spelling of 221220200222020 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred million, two hundred twenty-two thousand, twenty".