223123344420 has 96 divisors (see below), whose sum is σ = 642070800000. Its totient is φ = 57851725824.

The previous prime is 223123344397. The next prime is 223123344473. The reversal of 223123344420 is 24443321322.

It is a super-3 number, since 3×223123344420³ (a number of 35 digits) contains 333 as substring.

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

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, 3271831 + ... + 3339329.

It is an arithmetic number, because the mean of its divisors is an integer number (6688237500).

Almost surely, 2^223123344420 is an apocalyptic number.

223123344420 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 223123344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321035400000).

223123344420 is an abundant number, since it is smaller than the sum of its proper divisors (418947455580).

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

223123344420 is a wasteful number, since it uses less digits than its factorization.

223123344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69037 (or 69035 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 223123344420 its reverse (24443321322), we get a palindrome (247566665742).

The spelling of 223123344420 in words is "two hundred twenty-three billion, one hundred twenty-three million, three hundred forty-four thousand, four hundred twenty".