223220231220 has 192 divisors, whose sum is σ = 737896513536. Its totient is φ = 49339100160.

The previous prime is 223220231183. The next prime is 223220231231. The reversal of 223220231220 is 22132022322.

It is a super-3 number, since 3×223220231220³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 19823832 + ... + 19835088.

It is an arithmetic number, because the mean of its divisors is an integer number (3843211008).

Almost surely, 2^223220231220 is an apocalyptic number.

223220231220 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 223220231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368948256768).

223220231220 is an abundant number, since it is smaller than the sum of its proper divisors (514676282316).

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

223220231220 is a wasteful number, since it uses less digits than its factorization.

223220231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830 (or 12828 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 223220231220 its reverse (22132022322), we get a palindrome (245352253542).

The spelling of 223220231220 in words is "two hundred twenty-three billion, two hundred twenty million, two hundred thirty-one thousand, two hundred twenty".