11001111101012 has 6 divisors (see below), whose sum is σ = 19251944426778. Its totient is φ = 5500555550504.

The previous prime is 11001111100913. The next prime is 11001111101017. The reversal of 11001111101012 is 21010111110011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8485067971396 + 2516043129616 = 2912914^2 + 1586204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11001111100984 and 11001111101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001111101017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375138887623 + ... + 1375138887630.

It is an arithmetic number, because the mean of its divisors is an integer number (3208657404463).

Almost surely, 2^{11001111101012} is an apocalyptic number.

It is an amenable number.

11001111101012 is a deficient number, since it is larger than the sum of its proper divisors (8250833325766).

11001111101012 is a wasteful number, since it uses less digits than its factorization.

11001111101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750277775257 (or 2750277775255 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 11001111101012 its reverse (21010111110011), we get a palindrome (32011222211023).

The spelling of 11001111101012 in words is "eleven trillion, one billion, one hundred eleven million, one hundred one thousand, twelve".