32221212222320 has 160 divisors (see below), whose sum is σ = 81971463490560. Its totient is φ = 11681466347520.

The previous prime is 32221212222317. The next prime is 32221212222371. The reversal of 32221212222320 is 2322221212223.

It is a self number, because there is not a number n which added to its sum of digits gives 32221212222320.

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, 551335661 + ... + 551394099.

It is an arithmetic number, because the mean of its divisors is an integer number (512321646816).

Almost surely, 2^{32221212222320} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32221212222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40985731745280).

32221212222320 is an abundant number, since it is smaller than the sum of its proper divisors (49750251268240).

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

32221212222320 is a wasteful number, since it uses less digits than its factorization.

32221212222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60343 (or 60337 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 32221212222320 its reverse (2322221212223), we get a palindrome (34543433434543).

The spelling of 32221212222320 in words is "thirty-two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, three hundred twenty".