221023322222320 has 160 divisors (see below), whose sum is σ = 544394353531392. Its totient is φ = 83283012105216.

The previous prime is 221023322222299. The next prime is 221023322222357. The reversal of 221023322222320 is 23222223320122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46129519 + ... + 50694961.

Almost surely, 2^{221023322222320} is an apocalyptic number.

221023322222320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221023322222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272197176765696).

221023322222320 is an abundant number, since it is smaller than the sum of its proper divisors (323371031309072).

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

221023322222320 is a wasteful number, since it uses less digits than its factorization.

221023322222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4565879 (or 4565873 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 221023322222320 its reverse (23222223320122), we get a palindrome (244245545542442).

The spelling of 221023322222320 in words is "two hundred twenty-one trillion, twenty-three billion, three hundred twenty-two million, two hundred twenty-two thousand, three hundred twenty".