11221220112212 has 12 divisors (see below), whose sum is σ = 21422329305216. Its totient is φ = 5100554596440.

The previous prime is 11221220112181. The next prime is 11221220112233. The reversal of 11221220112212 is 21221102212211.

11221220112212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11221220112212² (a number of 27 digits) contains 22 as substring.

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, 127513864868 + ... + 127513864955.

It is an arithmetic number, because the mean of its divisors is an integer number (1785194108768).

Almost surely, 2^{11221220112212} is an apocalyptic number.

It is an amenable number.

11221220112212 is a deficient number, since it is larger than the sum of its proper divisors (10201109193004).

11221220112212 is a wasteful number, since it uses less digits than its factorization.

11221220112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255027729838 (or 255027729836 counting only the distinct ones).

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

Adding to 11221220112212 its reverse (21221102212211), we get a palindrome (32442322324423).

The spelling of 11221220112212 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, two hundred twelve".