221203223312320 has 56 divisors (see below), whose sum is σ = 526742444404800. Its totient is φ = 88480908198912.

The previous prime is 221203223312263. The next prime is 221203223312321. The reversal of 221203223312320 is 23213322302122.

221203223312320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221203223312320² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221203223312321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79850601 + ... + 82574359.

Almost surely, 2^{221203223312320} is an apocalyptic number.

221203223312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221203223312320 is an abundant number, since it is smaller than the sum of its proper divisors (305539221092480).

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

221203223312320 is a wasteful number, since it uses less digits than its factorization.

221203223312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977565 (or 2977555 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 221203223312320 its reverse (23213322302122), we get a palindrome (244416545614442).

The spelling of 221203223312320 in words is "two hundred twenty-one trillion, two hundred three billion, two hundred twenty-three million, three hundred twelve thousand, three hundred twenty".