1155044103212 has 12 divisors (see below), whose sum is σ = 2021350383696. Its totient is φ = 577515422160.

The previous prime is 1155044103211. The next prime is 1155044103217. The reversal of 1155044103212 is 2123014405511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1155044103211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254464 + ... + 1970727.

It is an arithmetic number, because the mean of its divisors is an integer number (168445865308).

Almost surely, 2^{1155044103212} is an apocalyptic number.

It is an amenable number.

1155044103212 is a deficient number, since it is larger than the sum of its proper divisors (866306280484).

1155044103212 is a wasteful number, since it uses less digits than its factorization.

1155044103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314728 (or 3314726 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1155044103212 its reverse (2123014405511), we get a palindrome (3278058508723).

The spelling of 1155044103212 in words is "one trillion, one hundred fifty-five billion, forty-four million, one hundred three thousand, two hundred twelve".