11222021221212 has 12 divisors (see below), whose sum is σ = 26184716182856. Its totient is φ = 3740673740400.

The previous prime is 11222021221153. The next prime is 11222021221259. The reversal of 11222021221212 is 21212212022211.

11222021221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 467584217539 + ... + 467584217562.

Almost surely, 2^{11222021221212} is an apocalyptic number.

11222021221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11222021221212 is an abundant number, since it is smaller than the sum of its proper divisors (14962694961644).

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

11222021221212 is a wasteful number, since it uses less digits than its factorization.

11222021221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935168435108 (or 935168435106 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11222021221212 its reverse (21212212022211), we get a palindrome (32434233243423).

The spelling of 11222021221212 in words is "eleven trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, two hundred twelve".