223212012220 has 48 divisors (see below), whose sum is σ = 480781925568. Its totient is φ = 86997578240.

The previous prime is 223212012167. The next prime is 223212012227. The reversal of 223212012220 is 22210212322.

It is a super-3 number, since 3×223212012220³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212012227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482769 + ... + 824311.

It is an arithmetic number, because the mean of its divisors is an integer number (10016290116).

Almost surely, 2^223212012220 is an apocalyptic number.

223212012220 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 223212012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240390962784).

223212012220 is an abundant number, since it is smaller than the sum of its proper divisors (257569913348).

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

223212012220 is a wasteful number, since it uses less digits than its factorization.

223212012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342390 (or 342388 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 223212012220 its reverse (22210212322), we get a palindrome (245422224542).

The spelling of 223212012220 in words is "two hundred twenty-three billion, two hundred twelve million, twelve thousand, two hundred twenty".