12020203206 has 192 divisors, whose sum is σ = 30713978880. Its totient is φ = 3358998720.

The previous prime is 12020203193. The next prime is 12020203231. The reversal of 12020203206 is 60230202021.

It is a super-2 number, since 2×12020203206² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25961331 + ... + 25961793.

It is an arithmetic number, because the mean of its divisors is an integer number (159968640).

Almost surely, 2^12020203206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020203206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15356989440).

12020203206 is an abundant number, since it is smaller than the sum of its proper divisors (18693775674).

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

12020203206 is a wasteful number, since it uses less digits than its factorization.

12020203206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12020203206 its reverse (60230202021), we get a palindrome (72250405227).

The spelling of 12020203206 in words is "twelve billion, twenty million, two hundred three thousand, two hundred six".