12120230311 has 6 divisors (see below), whose sum is σ = 14099043480. Its totient is φ = 10388768796.

The previous prime is 12120230281. The next prime is 12120230329. The reversal of 12120230311 is 11303202121.

It is not a de Polignac number, because 12120230311 - 2¹⁹ = 12119706023 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 (12120230371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123675771 + ... + 123675868.

It is an arithmetic number, because the mean of its divisors is an integer number (2349840580).

Almost surely, 2^12120230311 is an apocalyptic number.

12120230311 is a deficient number, since it is larger than the sum of its proper divisors (1978813169).

12120230311 is an equidigital number, since it uses as much as digits as its factorization.

12120230311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247351653 (or 247351646 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12120230311 its reverse (11303202121), we get a palindrome (23423432432).

The spelling of 12120230311 in words is "twelve billion, one hundred twenty million, two hundred thirty thousand, three hundred eleven".