11001121012 has 48 divisors (see below), whose sum is σ = 22398183808. Its totient is φ = 4630348800.

The previous prime is 11001121003. The next prime is 11001121037. The reversal of 11001121012 is 21012110011.

It is a self number, because there is not a number n which added to its sum of digits gives 11001121012.

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, 623512 + ... + 640912.

Almost surely, 2^11001121012 is an apocalyptic number.

It is an amenable number.

11001121012 is an abundant number, since it is smaller than the sum of its proper divisors (11397062796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11001121012 is a wasteful number, since it uses less digits than its factorization.

11001121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17816 (or 17814 counting only the distinct ones).

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

Adding to 11001121012 its reverse (21012110011), we get a palindrome (32013231023).

It can be divided in two parts, 110011 and 21012, that multiplied together give a palindrome (2311551132).

The spelling of 11001121012 in words is "eleven billion, one million, one hundred twenty-one thousand, twelve".