11121001012 has 48 divisors (see below), whose sum is σ = 21839477184. Its totient is φ = 4912128000.

The previous prime is 11121000991. The next prime is 11121001019. The reversal of 11121001012 is 21010012111.

It is a self number, because there is not a number n which added to its sum of digits gives 11121001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121001019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197812 + ... + 247732.

It is an arithmetic number, because the mean of its divisors is an integer number (454989108).

Almost surely, 2^11121001012 is an apocalyptic number.

It is an amenable number.

11121001012 is a deficient number, since it is larger than the sum of its proper divisors (10718476172).

11121001012 is a wasteful number, since it uses less digits than its factorization.

11121001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50080 (or 50078 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11121001012 its reverse (21010012111), we get a palindrome (32131013123).

The spelling of 11121001012 in words is "eleven billion, one hundred twenty-one million, one thousand, twelve".