223212344040 has 144 divisors (see below), whose sum is σ = 843879387780. Its totient is φ = 51019960320.

The previous prime is 223212344009. The next prime is 223212344053. The reversal of 223212344040 is 40443212322.

223212344040 is a `hidden beast` number, since 2 + 2 + 3 + 21 + 234 + 404 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 216442674756 + 6769669284 = 465234^2 + 82278^2 .

It is a super-3 number, since 3×223212344040³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223212343995 and 223212344013.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6309241 + ... + 6344520.

Almost surely, 2^223212344040 is an apocalyptic number.

223212344040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223212344040 is an abundant number, since it is smaller than the sum of its proper divisors (620667043740).

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

223212344040 is a wasteful number, since it uses less digits than its factorization.

223212344040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12653792 (or 12653778 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 223212344040 its reverse (40443212322), we get a palindrome (263655556362).

The spelling of 223212344040 in words is "two hundred twenty-three billion, two hundred twelve million, three hundred forty-four thousand, forty".