223131212120 has 32 divisors (see below), whose sum is σ = 502099376400. Its totient is φ = 89242858368.

The previous prime is 223131212053. The next prime is 223131212201. The reversal of 223131212120 is 21212131322.

223131212120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223131212120³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 223131212092 and 223131212101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80642 + ... + 672878.

Almost surely, 2^223131212120 is an apocalyptic number.

223131212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223131212120 is an abundant number, since it is smaller than the sum of its proper divisors (278968164280).

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

223131212120 is a wasteful number, since it uses less digits than its factorization.

223131212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601667 (or 601663 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 223131212120 its reverse (21212131322), we get a palindrome (244343343442).

The spelling of 223131212120 in words is "two hundred twenty-three billion, one hundred thirty-one million, two hundred twelve thousand, one hundred twenty".