223212312011 has 8 divisors (see below), whose sum is σ = 240391374720. Its totient is φ = 206034518592.

The previous prime is 223212311989. The next prime is 223212312023. The reversal of 223212312011 is 110213212322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223212312011 - 2¹⁴ = 223212295627 is a prime.

It is a super-4 number, since 4×223212312011⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223212312031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64991 + ... + 671303.

It is an arithmetic number, because the mean of its divisors is an integer number (30048921840).

Almost surely, 2^223212312011 is an apocalyptic number.

223212312011 is a deficient number, since it is larger than the sum of its proper divisors (17179062709).

223212312011 is a wasteful number, since it uses less digits than its factorization.

223212312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634645.

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

Adding to 223212312011 its reverse (110213212322), we get a palindrome (333425524333).

It can be divided in two parts, 22321 and 2312011, that added together give a palindrome (2334332).

The spelling of 223212312011 in words is "two hundred twenty-three billion, two hundred twelve million, three hundred twelve thousand, eleven".