221323130133020 has 48 divisors (see below), whose sum is σ = 472664767569120. Its totient is φ = 87027174356736.

The previous prime is 221323130133013. The next prime is 221323130133121. The reversal of 221323130133020 is 20331031323122.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 64324274 + ... + 67677606.

It is an arithmetic number, because the mean of its divisors is an integer number (9847182657690).

Almost surely, 2^{221323130133020} is an apocalyptic number.

221323130133020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221323130133020 is an abundant number, since it is smaller than the sum of its proper divisors (251341637436100).

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

221323130133020 is a wasteful number, since it uses less digits than its factorization.

221323130133020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409334 (or 3409332 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 221323130133020 its reverse (20331031323122), we get a palindrome (241654161456142).

The spelling of 221323130133020 in words is "two hundred twenty-one trillion, three hundred twenty-three billion, one hundred thirty million, one hundred thirty-three thousand, twenty".