11021123221212 has 48 divisors (see below), whose sum is σ = 28107449374592. Its totient is φ = 3340501179840.

The previous prime is 11021123221181. The next prime is 11021123221237. The reversal of 11021123221212 is 21212232112011.

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 in 15 ways as a sum of consecutive naturals, for example, 527215114 + ... + 527236017.

Almost surely, 2^{11021123221212} is an apocalyptic number.

11021123221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021123221212 is an abundant number, since it is smaller than the sum of its proper divisors (17086326153380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11021123221212 is a wasteful number, since it uses less digits than its factorization.

11021123221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054451218 (or 1054451216 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 11021123221212 its reverse (21212232112011), we get a palindrome (32233355333223).

The spelling of 11021123221212 in words is "eleven trillion, twenty-one billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred twelve".