11221122212212 has 24 divisors (see below), whose sum is σ = 21422351295072. Its totient is φ = 5100460360800.

The previous prime is 11221122212207. The next prime is 11221122212249. The reversal of 11221122212212 is 21221222112211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 3525718 + ... + 5905330.

It is an arithmetic number, because the mean of its divisors is an integer number (892597970628).

Almost surely, 2^{11221122212212} is an apocalyptic number.

It is an amenable number.

11221122212212 is a deficient number, since it is larger than the sum of its proper divisors (10201229082860).

11221122212212 is a wasteful number, since it uses less digits than its factorization.

11221122212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486799 (or 2486797 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 11221122212212 its reverse (21221222112211), we get a palindrome (32442344324423).

The spelling of 11221122212212 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twelve".