323223121232220 has 192 divisors, whose sum is σ = 993501051895296. Its totient is φ = 77865090462720.

The previous prime is 323223121232213. The next prime is 323223121232237. The reversal of 323223121232220 is 22232121322323.

It is a happy number.

It is a super-2 number, since 2×323223121232220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 752522562 + ... + 752951958.

It is an arithmetic number, because the mean of its divisors is an integer number (5174484645288).

Almost surely, 2^{323223121232220} is an apocalyptic number.

323223121232220 is a gapful number since it is divisible by the number (30) 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 323223121232220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496750525947648).

323223121232220 is an abundant number, since it is smaller than the sum of its proper divisors (670277930663076).

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

323223121232220 is a wasteful number, since it uses less digits than its factorization.

323223121232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436580 (or 436578 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 323223121232220 its reverse (22232121322323), we get a palindrome (345455242554543).

The spelling of 323223121232220 in words is "three hundred twenty-three trillion, two hundred twenty-three billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty".