11212123222 has 4 divisors (see below), whose sum is σ = 16818184836. Its totient is φ = 5606061610.

The previous prime is 11212123213. The next prime is 11212123229. The reversal of 11212123222 is 22232121211.

11212123222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22232121211 = 103 ⋅215845837.

It is a super-2 number, since 2×11212123222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11212123222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212123229) by changing a digit.

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, 2803030804 + ... + 2803030807.

It is an arithmetic number, because the mean of its divisors is an integer number (4204546209).

Almost surely, 2^11212123222 is an apocalyptic number.

11212123222 is a deficient number, since it is larger than the sum of its proper divisors (5606061614).

11212123222 is an equidigital number, since it uses as much as digits as its factorization.

11212123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606061613.

The product of its digits is 192, while the sum is 19.

Adding to 11212123222 its reverse (22232121211), we get a palindrome (33444244433).

The spelling of 11212123222 in words is "eleven billion, two hundred twelve million, one hundred twenty-three thousand, two hundred twenty-two".