12013205252 has 6 divisors (see below), whose sum is σ = 21023109198. Its totient is φ = 6006602624.

The previous prime is 12013205249. The next prime is 12013205299. The reversal of 12013205252 is 25250231021.

It can be written as a sum of positive squares in only one way, i.e., 11097779716 + 915425536 = 105346^2 + 30256^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501650653 + ... + 1501650660.

It is an arithmetic number, because the mean of its divisors is an integer number (3503851533).

Almost surely, 2^12013205252 is an apocalyptic number.

It is an amenable number.

12013205252 is a deficient number, since it is larger than the sum of its proper divisors (9009903946).

12013205252 is a wasteful number, since it uses less digits than its factorization.

12013205252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003301317 (or 3003301315 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 12013205252 its reverse (25250231021), we get a palindrome (37263436273).

The spelling of 12013205252 in words is "twelve billion, thirteen million, two hundred five thousand, two hundred fifty-two".