221121323330220 has 168 divisors, whose sum is σ = 706604933079024. Its totient is φ = 58085601095808.

The previous prime is 221121323330197. The next prime is 221121323330233. The reversal of 221121323330220 is 22033323121122.

221121323330220 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 2 + 1 + 323 + 330 + 2 + 2 + 0 = 666.

It is a super-3 number, since 3×221121323330220³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 112202779 + ... + 114156498.

It is an arithmetic number, because the mean of its divisors is an integer number (4205981744518).

Almost surely, 2^{221121323330220} is an apocalyptic number.

221121323330220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221121323330220 is an abundant number, since it is smaller than the sum of its proper divisors (485483609748804).

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

221121323330220 is a wasteful number, since it uses less digits than its factorization.

221121323330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226359371 (or 226359354 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 221121323330220 its reverse (22033323121122), we get a palindrome (243154646451342).

The spelling of 221121323330220 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, three hundred twenty-three million, three hundred thirty thousand, two hundred twenty".