12012260644 has 6 divisors (see below), whose sum is σ = 21021456134. Its totient is φ = 6006130320.

The previous prime is 12012260633. The next prime is 12012260653. The reversal of 12012260644 is 44606221021.

It can be written as a sum of positive squares in only one way, i.e., 11166148900 + 846111744 = 105670^2 + 29088^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501532577 + ... + 1501532584.

Almost surely, 2^12012260644 is an apocalyptic number.

It is an amenable number.

12012260644 is a deficient number, since it is larger than the sum of its proper divisors (9009195490).

12012260644 is a wasteful number, since it uses less digits than its factorization.

12012260644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003065165 (or 3003065163 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 12012260644 its reverse (44606221021), we get a palindrome (56618481665).

The spelling of 12012260644 in words is "twelve billion, twelve million, two hundred sixty thousand, six hundred forty-four".