11331221213222 has 4 divisors (see below), whose sum is σ = 16996831819836. Its totient is φ = 5665610606610.

The previous prime is 11331221213161. The next prime is 11331221213231. The reversal of 11331221213222 is 22231212213311.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 11331221213191 and 11331221213200.

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, 2832805303304 + ... + 2832805303307.

It is an arithmetic number, because the mean of its divisors is an integer number (4249207954959).

Almost surely, 2^{11331221213222} is an apocalyptic number.

11331221213222 is a deficient number, since it is larger than the sum of its proper divisors (5665610606614).

11331221213222 is an equidigital number, since it uses as much as digits as its factorization.

11331221213222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665610606613.

The product of its digits is 1728, while the sum is 26.

Adding to 11331221213222 its reverse (22231212213311), we get a palindrome (33562433426533).

The spelling of 11331221213222 in words is "eleven trillion, three hundred thirty-one billion, two hundred twenty-one million, two hundred thirteen thousand, two hundred twenty-two".