11011111001012 has 48 divisors (see below), whose sum is σ = 20529909691200. Its totient is φ = 5152470865920.

The previous prime is 11011111000987. The next prime is 11011111001053. The reversal of 11011111001012 is 21010011111011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11011111000984 and 11011111001002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73230164 + ... + 73380372.

It is an arithmetic number, because the mean of its divisors is an integer number (427706451900).

Almost surely, 2^{11011111001012} is an apocalyptic number.

It is an amenable number.

11011111001012 is a deficient number, since it is larger than the sum of its proper divisors (9518798690188).

11011111001012 is a wasteful number, since it uses less digits than its factorization.

11011111001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161936 (or 161934 counting only the distinct ones).

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

Adding to 11011111001012 its reverse (21010011111011), we get a palindrome (32021122112023).

The spelling of 11011111001012 in words is "eleven trillion, eleven billion, one hundred eleven million, one thousand, twelve".