11212322111 has 24 divisors (see below), whose sum is σ = 11838498672. Its totient is φ = 10613030400.

The previous prime is 11212322101. The next prime is 11212322119. The reversal of 11212322111 is 11122321211.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11212322111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212322111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212322119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13082795 + ... + 13083651.

It is an arithmetic number, because the mean of its divisors is an integer number (493270778).

Almost surely, 2^11212322111 is an apocalyptic number.

11212322111 is a deficient number, since it is larger than the sum of its proper divisors (626176561).

11212322111 is an equidigital number, since it uses as much as digits as its factorization.

11212322111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1122 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

Adding to 11212322111 its reverse (11122321211), we get a palindrome (22334643322).

It can be divided in two parts, 1121 and 2322111, that added together give a palindrome (2323232).

The spelling of 11212322111 in words is "eleven billion, two hundred twelve million, three hundred twenty-two thousand, one hundred eleven".