12130021311 has 16 divisors (see below), whose sum is σ = 16302232800. Its totient is φ = 8022381440.

The previous prime is 12130021307. The next prime is 12130021327. The reversal of 12130021311 is 11312003121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12130021311 - 2² = 12130021307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130021361) 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, 350461 + ... + 383513.

It is an arithmetic number, because the mean of its divisors is an integer number (1018889550).

Almost surely, 2^12130021311 is an apocalyptic number.

12130021311 is a deficient number, since it is larger than the sum of its proper divisors (4172211489).

12130021311 is a wasteful number, since it uses less digits than its factorization.

12130021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34026.

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

Adding to 12130021311 its reverse (11312003121), we get a palindrome (23442024432).

The spelling of 12130021311 in words is "twelve billion, one hundred thirty million, twenty-one thousand, three hundred eleven".