1091110012 has 6 divisors (see below), whose sum is σ = 1909442528. Its totient is φ = 545555004.

The previous prime is 1091109991. The next prime is 1091110019. The reversal of 1091110012 is 2100111901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091110019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136388748 + ... + 136388755.

Almost surely, 2^1091110012 is an apocalyptic number.

It is an amenable number.

1091110012 is a deficient number, since it is larger than the sum of its proper divisors (818332516).

1091110012 is a wasteful number, since it uses less digits than its factorization.

1091110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272777507 (or 272777505 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 1091110012 is about 33031.9544078155. The cubic root of 1091110012 is about 1029.4916937669.

Adding to 1091110012 its reverse (2100111901), we get a palindrome (3191221913).

The spelling of 1091110012 in words is "one billion, ninety-one million, one hundred ten thousand, twelve".