12003055212 has 48 divisors (see below), whose sum is σ = 29555671040. Its totient is φ = 3780862272.

The previous prime is 12003055177. The next prime is 12003055213. The reversal of 12003055212 is 21255030021.

It is not an unprimeable number, because it can be changed into a prime (12003055213) 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, 24213 + ... + 156819.

Almost surely, 2^12003055212 is an apocalyptic number.

12003055212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12003055212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14777835520).

12003055212 is an abundant number, since it is smaller than the sum of its proper divisors (17552615828).

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

12003055212 is a wasteful number, since it uses less digits than its factorization.

12003055212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133030 (or 133028 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 12003055212 its reverse (21255030021), we get a palindrome (33258085233).

The spelling of 12003055212 in words is "twelve billion, three million, fifty-five thousand, two hundred twelve".