11001221212 has 12 divisors (see below), whose sum is σ = 19259210880. Its totient is φ = 5498589536.

The previous prime is 11001221207. The next prime is 11001221233. The reversal of 11001221212 is 21212210011.

11001221212 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 = 11001221192 and 11001221201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492988 + ... + 514819.

It is an arithmetic number, because the mean of its divisors is an integer number (1604934240).

Almost surely, 2^11001221212 is an apocalyptic number.

It is an amenable number.

11001221212 is a deficient number, since it is larger than the sum of its proper divisors (8257989668).

11001221212 is a wasteful number, since it uses less digits than its factorization.

11001221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010540 (or 1010538 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11001221212 its reverse (21212210011), we get a palindrome (32213431223).

The spelling of 11001221212 in words is "eleven billion, one million, two hundred twenty-one thousand, two hundred twelve".