12021223312230 has 128 divisors (see below), whose sum is σ = 31857055211520. Its totient is φ = 2878753637760.

The previous prime is 12021223312223. The next prime is 12021223312253. The reversal of 12021223312230 is 3221332212021.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021223312230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 254237731 + ... + 254285009.

It is an arithmetic number, because the mean of its divisors is an integer number (248883243840).

Almost surely, 2^{12021223312230} is an apocalyptic number.

12021223312230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021223312230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15928527605760).

12021223312230 is an abundant number, since it is smaller than the sum of its proper divisors (19835831899290).

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

12021223312230 is a wasteful number, since it uses less digits than its factorization.

12021223312230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56666.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12021223312230 its reverse (3221332212021), we get a palindrome (15242555524251).

The spelling of 12021223312230 in words is "twelve trillion, twenty-one billion, two hundred twenty-three million, three hundred twelve thousand, two hundred thirty".