11001121201212 has 48 divisors (see below), whose sum is σ = 26785774697472. Its totient is φ = 3507546750400.

The previous prime is 11001121201183. The next prime is 11001121201237. The reversal of 11001121201212 is 21210212110011.

It is a happy number.

11001121201212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11001121201191 and 11001121201200.

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, 18667462 + ... + 19247762.

It is an arithmetic number, because the mean of its divisors is an integer number (558036972864).

Almost surely, 2^{11001121201212} is an apocalyptic number.

11001121201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11001121201212 is an abundant number, since it is smaller than the sum of its proper divisors (15784653496260).

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

11001121201212 is a wasteful number, since it uses less digits than its factorization.

11001121201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649018 (or 649016 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11001121201212 its reverse (21210212110011), we get a palindrome (32211333311223).

The spelling of 11001121201212 in words is "eleven trillion, one billion, one hundred twenty-one million, two hundred one thousand, two hundred twelve".