223121211230 has 32 divisors (see below), whose sum is σ = 418456130400. Its totient is φ = 85551000192.

The previous prime is 223121211223. The next prime is 223121211239. The reversal of 223121211230 is 32112121322.

It is a super-3 number, since 3×223121211230³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223121211239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2727257 + ... + 2807876.

It is an arithmetic number, because the mean of its divisors is an integer number (13076754075).

Almost surely, 2^223121211230 is an apocalyptic number.

223121211230 is a deficient number, since it is larger than the sum of its proper divisors (195334919170).

223121211230 is a wasteful number, since it uses less digits than its factorization.

223121211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535308.

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

Adding to 223121211230 its reverse (32112121322), we get a palindrome (255233332552).

The spelling of 223121211230 in words is "two hundred twenty-three billion, one hundred twenty-one million, two hundred eleven thousand, two hundred thirty".