33223043220 has 384 divisors, whose sum is σ = 108689817600. Its totient is φ = 7529668608.

The previous prime is 33223043179. The next prime is 33223043251. The reversal of 33223043220 is 2234032233.

It is a happy number.

It is a super-2 number, since 2×33223043220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31975461 + ... + 31976499.

It is an arithmetic number, because the mean of its divisors is an integer number (283046400).

Almost surely, 2^33223043220 is an apocalyptic number.

33223043220 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 33223043220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54344908800).

33223043220 is an abundant number, since it is smaller than the sum of its proper divisors (75466774380).

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

33223043220 is a wasteful number, since it uses less digits than its factorization.

33223043220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 33223043220 its reverse (2234032233), we get a palindrome (35457075453).

The spelling of 33223043220 in words is "thirty-three billion, two hundred twenty-three million, forty-three thousand, two hundred twenty".