221010122222020 has 24 divisors (see below), whose sum is σ = 464121905718744. Its totient is φ = 88403925259776.

The previous prime is 221010122221979. The next prime is 221010122222033. The reversal of 221010122222020 is 20222221010122.

It can be written as a sum of positive squares in 4 ways, for example, as 4214652973444 + 216795469248576 = 2052962^2 + 14723976^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7681662 + ... + 22383658.

It is an arithmetic number, because the mean of its divisors is an integer number (19338412738281).

Almost surely, 2^{221010122222020} is an apocalyptic number.

221010122222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010122222020 is an abundant number, since it is smaller than the sum of its proper divisors (243111783496724).

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

221010122222020 is a wasteful number, since it uses less digits than its factorization.

221010122222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15453639 (or 15453637 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221010122222020 its reverse (20222221010122), we get a palindrome (241232343232142).

The spelling of 221010122222020 in words is "two hundred twenty-one trillion, ten billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty".