221303411320 has 64 divisors (see below), whose sum is σ = 517148835840. Its totient is φ = 85140201600.

The previous prime is 221303411269. The next prime is 221303411333. The reversal of 221303411320 is 23114303122.

It is a junction number, because it is equal to n+sod(n) for n = 221303411291 and 221303411300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345336 + ... + 749575.

It is an arithmetic number, because the mean of its divisors is an integer number (8080450560).

Almost surely, 2^221303411320 is an apocalyptic number.

221303411320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221303411320 is an abundant number, since it is smaller than the sum of its proper divisors (295845424520).

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

221303411320 is a wasteful number, since it uses less digits than its factorization.

221303411320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095116 (or 1095112 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221303411320 its reverse (23114303122), we get a palindrome (244417714442).

The spelling of 221303411320 in words is "two hundred twenty-one billion, three hundred three million, four hundred eleven thousand, three hundred twenty".