12111021303 has 4 divisors (see below), whose sum is σ = 16148028408. Its totient is φ = 8074014200.

The previous prime is 12111021281. The next prime is 12111021319. The reversal of 12111021303 is 30312011121.

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 12111021303 - 2⁸ = 12111021047 is a prime.

It is a super-3 number, since 3×12111021303³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111021343) 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, 2018503548 + ... + 2018503553.

It is an arithmetic number, because the mean of its divisors is an integer number (4037007102).

Almost surely, 2^12111021303 is an apocalyptic number.

12111021303 is a deficient number, since it is larger than the sum of its proper divisors (4037007105).

12111021303 is an equidigital number, since it uses as much as digits as its factorization.

12111021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037007104.

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

Adding to 12111021303 its reverse (30312011121), we get a palindrome (42423032424).

The spelling of 12111021303 in words is "twelve billion, one hundred eleven million, twenty-one thousand, three hundred three".