223122212120 has 32 divisors (see below), whose sum is σ = 502435573920. Its totient is φ = 89175889920.

The previous prime is 223122212081. The next prime is 223122212147. The reversal of 223122212120 is 21212221322.

It is a super-3 number, since 3×223122212120³ (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 = 223122212092 and 223122212101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231561 + ... + 2329400.

It is an arithmetic number, because the mean of its divisors is an integer number (15701111685).

Almost surely, 2^223122212120 is an apocalyptic number.

223122212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223122212120 is an abundant number, since it is smaller than the sum of its proper divisors (279313361800).

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

223122212120 is a wasteful number, since it uses less digits than its factorization.

223122212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562195 (or 4562191 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 223122212120 its reverse (21212221322), we get a palindrome (244334433442).

The spelling of 223122212120 in words is "two hundred twenty-three billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty".