11212011103 has 4 divisors (see below), whose sum is σ = 11242070488. Its totient is φ = 11181951720.

The previous prime is 11212011073. The next prime is 11212011119. The reversal of 11212011103 is 30111021211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11212011103 - 2²⁵ = 11178456671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212011143) 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 3 ways as a sum of consecutive naturals, for example, 15029133 + ... + 15029878.

It is an arithmetic number, because the mean of its divisors is an integer number (2810517622).

Almost surely, 2^11212011103 is an apocalyptic number.

11212011103 is a deficient number, since it is larger than the sum of its proper divisors (30059385).

11212011103 is an equidigital number, since it uses as much as digits as its factorization.

11212011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30059384.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11212011103 its reverse (30111021211), we get a palindrome (41323032314).

The spelling of 11212011103 in words is "eleven billion, two hundred twelve million, eleven thousand, one hundred three".