223111203212 has 12 divisors (see below), whose sum is σ = 390615345120. Its totient is φ = 111506818896.

The previous prime is 223111203193. The next prime is 223111203229. The reversal of 223111203212 is 212302111322.

It is a super-3 number, since 3×223111203212³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12185387 + ... + 12203682.

It is an arithmetic number, because the mean of its divisors is an integer number (32551278760).

Almost surely, 2^223111203212 is an apocalyptic number.

It is an amenable number.

223111203212 is a deficient number, since it is larger than the sum of its proper divisors (167504141908).

223111203212 is a wasteful number, since it uses less digits than its factorization.

223111203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24391360 (or 24391358 counting only the distinct ones).

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

Adding to 223111203212 its reverse (212302111322), we get a palindrome (435413314534).

The spelling of 223111203212 in words is "two hundred twenty-three billion, one hundred eleven million, two hundred three thousand, two hundred twelve".