12011121303 has 4 divisors (see below), whose sum is σ = 16014828408. Its totient is φ = 8007414200.

The previous prime is 12011121281. The next prime is 12011121307. The reversal of 12011121303 is 30312111021.

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 12011121303 - 2⁸ = 12011121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011121307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001853548 + ... + 2001853553.

It is an arithmetic number, because the mean of its divisors is an integer number (4003707102).

Almost surely, 2^12011121303 is an apocalyptic number.

12011121303 is a deficient number, since it is larger than the sum of its proper divisors (4003707105).

12011121303 is an equidigital number, since it uses as much as digits as its factorization.

12011121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003707104.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12011121303 its reverse (30312111021), we get a palindrome (42323232324).

The spelling of 12011121303 in words is "twelve billion, eleven million, one hundred twenty-one thousand, three hundred three".