12020203224 has 64 divisors (see below), whose sum is σ = 33448272000. Its totient is φ = 3999676320.

The previous prime is 12020203193. The next prime is 12020203231. The reversal of 12020203224 is 42230202021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12020203197 and 12020203206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74607 + ... + 172065.

It is an arithmetic number, because the mean of its divisors is an integer number (522629250).

Almost surely, 2^12020203224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020203224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16724136000).

12020203224 is an abundant number, since it is smaller than the sum of its proper divisors (21428068776).

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

12020203224 is a wasteful number, since it uses less digits than its factorization.

12020203224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98045 (or 98035 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 12020203224 its reverse (42230202021), we get a palindrome (54250405245).

The spelling of 12020203224 in words is "twelve billion, twenty million, two hundred three thousand, two hundred twenty-four".