11021222121212 has 6 divisors (see below), whose sum is σ = 19287138712128. Its totient is φ = 5510611060604.

The previous prime is 11021222121191. The next prime is 11021222121257. The reversal of 11021222121212 is 21212122212011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377652765148 + ... + 1377652765155.

It is an arithmetic number, because the mean of its divisors is an integer number (3214523118688).

Almost surely, 2^{11021222121212} is an apocalyptic number.

It is an amenable number.

11021222121212 is a deficient number, since it is larger than the sum of its proper divisors (8265916590916).

11021222121212 is a wasteful number, since it uses less digits than its factorization.

11021222121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755305530307 (or 2755305530305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11021222121212 its reverse (21212122212011), we get a palindrome (32233344333223).

The spelling of 11021222121212 in words is "eleven trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".