11021021212 has 12 divisors (see below), whose sum is σ = 20301881320. Its totient is φ = 5220483696.

The previous prime is 11021021183. The next prime is 11021021233. The reversal of 11021021212 is 21212012011.

It is a junction number, because it is equal to n+sod(n) for n = 11021021192 and 11021021201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72506643 + ... + 72506794.

Almost surely, 2^11021021212 is an apocalyptic number.

It is an amenable number.

11021021212 is a deficient number, since it is larger than the sum of its proper divisors (9280860108).

11021021212 is a wasteful number, since it uses less digits than its factorization.

11021021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145013460 (or 145013458 counting only the distinct ones).

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

Adding to 11021021212 its reverse (21212012011), we get a palindrome (32233033223).

The spelling of 11021021212 in words is "eleven billion, twenty-one million, twenty-one thousand, two hundred twelve".