12111065644 has 6 divisors (see below), whose sum is σ = 21194364884. Its totient is φ = 6055532820.

The previous prime is 12111065639. The next prime is 12111065653. The reversal of 12111065644 is 44656011121.

It is a super-2 number, since 2×12111065644² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1513883202 + ... + 1513883209.

Almost surely, 2^12111065644 is an apocalyptic number.

It is an amenable number.

12111065644 is a deficient number, since it is larger than the sum of its proper divisors (9083299240).

12111065644 is a wasteful number, since it uses less digits than its factorization.

12111065644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027766415 (or 3027766413 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 12111065644 its reverse (44656011121), we get a palindrome (56767076765).

The spelling of 12111065644 in words is "twelve billion, one hundred eleven million, sixty-five thousand, six hundred forty-four".