11212122233 has 16 divisors (see below), whose sum is σ = 12227220096. Its totient is φ = 10219322880.

The previous prime is 11212122221. The next prime is 11212122239. The reversal of 11212122233 is 33222121211.

11212122233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11212122233 - 2¹⁰ = 11212121209 is a prime.

It is a super-3 number, since 3×11212122233³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212122239) 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 in 15 ways as a sum of consecutive naturals, for example, 548588 + ... + 568658.

It is an arithmetic number, because the mean of its divisors is an integer number (764201256).

Almost surely, 2^11212122233 is an apocalyptic number.

11212122233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11212122233 is a deficient number, since it is larger than the sum of its proper divisors (1015097863).

11212122233 is a wasteful number, since it uses less digits than its factorization.

11212122233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20624.

The product of its digits is 288, while the sum is 20.

Adding to 11212122233 its reverse (33222121211), we get a palindrome (44434243444).

The spelling of 11212122233 in words is "eleven billion, two hundred twelve million, one hundred twenty-two thousand, two hundred thirty-three".