11211112003 has 16 divisors (see below), whose sum is σ = 13805326080. Its totient is φ = 8865808416.

The previous prime is 11211111997. The next prime is 11211112057. The reversal of 11211112003 is 30021111211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11211112003 - 2⁵ = 11211111971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (11211112063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154068 + ... + 214846.

It is an arithmetic number, because the mean of its divisors is an integer number (862832880).

Almost surely, 2^11211112003 is an apocalyptic number.

11211112003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11211112003 is a deficient number, since it is larger than the sum of its proper divisors (2594214077).

11211112003 is a wasteful number, since it uses less digits than its factorization.

11211112003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62826.

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

Adding to 11211112003 its reverse (30021111211), we get a palindrome (41232223214).

The spelling of 11211112003 in words is "eleven billion, two hundred eleven million, one hundred twelve thousand, three".