223212212120 has 16 divisors (see below), whose sum is σ = 502227477360. Its totient is φ = 89284884832.

The previous prime is 223212212117. The next prime is 223212212123. The reversal of 223212212120 is 21212212322.

It is an interprime number because it is at equal distance from previous prime (223212212117) and next prime (223212212123).

It is a super-3 number, since 3×223212212120³ (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 zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 223212212092 and 223212212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212212123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790152612 + ... + 2790152691.

It is an arithmetic number, because the mean of its divisors is an integer number (31389217335).

Almost surely, 2^223212212120 is an apocalyptic number.

223212212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223212212120 is an abundant number, since it is smaller than the sum of its proper divisors (279015265240).

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

223212212120 is a wasteful number, since it uses less digits than its factorization.

223212212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580305314 (or 5580305310 counting only the distinct ones).

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

Adding to 223212212120 its reverse (21212212322), we get a palindrome (244424424442).

The spelling of 223212212120 in words is "two hundred twenty-three billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty".