11011021221212 has 6 divisors (see below), whose sum is σ = 19269287137128. Its totient is φ = 5505510610604.

The previous prime is 11011021221209. The next prime is 11011021221223. The reversal of 11011021221212 is 21212212011011.

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 as a sum of consecutive naturals, namely, 1376377652648 + ... + 1376377652655.

It is an arithmetic number, because the mean of its divisors is an integer number (3211547856188).

Almost surely, 2^{11011021221212} is an apocalyptic number.

It is an amenable number.

11011021221212 is a deficient number, since it is larger than the sum of its proper divisors (8258265915916).

11011021221212 is a wasteful number, since it uses less digits than its factorization.

11011021221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752755305307 (or 2752755305305 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11011021221212 its reverse (21212212011011), we get a palindrome (32223233232223).

The spelling of 11011021221212 in words is "eleven trillion, eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred twelve".