11001120012 has 18 divisors (see below), whose sum is σ = 27808386788. Its totient is φ = 3667039992.

The previous prime is 11001119989. The next prime is 11001120037. The reversal of 11001120012 is 21002110011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11001119976 and 11001120003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152793298 + ... + 152793369.

Almost surely, 2^11001120012 is an apocalyptic number.

11001120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11001120012 is an abundant number, since it is smaller than the sum of its proper divisors (16807266776).

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

11001120012 is a wasteful number, since it uses less digits than its factorization.

11001120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305586677 (or 305586672 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11001120012 its reverse (21002110011), we get a palindrome (32003230023).

The spelling of 11001120012 in words is "eleven billion, one million, one hundred twenty thousand, twelve".