11212102111 has 8 divisors (see below), whose sum is σ = 13031015040. Its totient is φ = 9447485208.

The previous prime is 11212102081. The next prime is 11212102117. The reversal of 11212102111 is 11120121211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11212102111 - 2⁷ = 11212101983 is a prime.

It is a super-2 number, since 2×11212102111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212102091 and 11212102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212102117) by changing a digit.

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, 13573561 + ... + 13574386.

It is an arithmetic number, because the mean of its divisors is an integer number (1628876880).

Almost surely, 2^11212102111 is an apocalyptic number.

11212102111 is a deficient number, since it is larger than the sum of its proper divisors (1818912929).

11212102111 is an equidigital number, since it uses as much as digits as its factorization.

11212102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27148013.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11212102111 its reverse (11120121211), we get a palindrome (22332223322).

The spelling of 11212102111 in words is "eleven billion, two hundred twelve million, one hundred two thousand, one hundred eleven".