11221001212 has 12 divisors (see below), whose sum is σ = 20007257256. Its totient is φ = 5504642000.

The previous prime is 11221001203. The next prime is 11221001219. The reversal of 11221001212 is 21210012211.

It is a junction number, because it is equal to n+sod(n) for n = 11221001192 and 11221001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221001219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26464414 + ... + 26464837.

It is an arithmetic number, because the mean of its divisors is an integer number (1667271438).

Almost surely, 2^11221001212 is an apocalyptic number.

It is an amenable number.

11221001212 is a deficient number, since it is larger than the sum of its proper divisors (8786256044).

11221001212 is a wasteful number, since it uses less digits than its factorization.

11221001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52929308 (or 52929306 counting only the distinct ones).

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

Adding to 11221001212 its reverse (21210012211), we get a palindrome (32431013423).

The spelling of 11221001212 in words is "eleven billion, two hundred twenty-one million, one thousand, two hundred twelve".