223032220020 has 72 divisors (see below), whose sum is σ = 676689426504. Its totient is φ = 59461337088.

The previous prime is 223032219947. The next prime is 223032220027. The reversal of 223032220020 is 20022230322.

It can be written as a sum of positive squares in 4 ways, for example, as 27820238436 + 195211981584 = 166794^2 + 441828^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 223032219975 and 223032220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223032220027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637812 + ... + 923508.

It is an arithmetic number, because the mean of its divisors is an integer number (9398464257).

Almost surely, 2^223032220020 is an apocalyptic number.

223032220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223032220020 is an abundant number, since it is smaller than the sum of its proper divisors (453657206484).

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

223032220020 is a wasteful number, since it uses less digits than its factorization.

223032220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290049 (or 290044 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 223032220020 its reverse (20022230322), we get a palindrome (243054450342).

The spelling of 223032220020 in words is "two hundred twenty-three billion, thirty-two million, two hundred twenty thousand, twenty".