12120311201 has 4 divisors (see below), whose sum is σ = 12348996372. Its totient is φ = 11891626032.

The previous prime is 12120311197. The next prime is 12120311233. The reversal of 12120311201 is 10211302121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10211302121 = 149 ⋅68532229.

It can be written as a sum of positive squares in 2 ways, for example, as 4526060176 + 7594251025 = 67276^2 + 87145^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120311201 - 2² = 12120311197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120311101) 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, 114342506 + ... + 114342611.

It is an arithmetic number, because the mean of its divisors is an integer number (3087249093).

Almost surely, 2^12120311201 is an apocalyptic number.

It is an amenable number.

12120311201 is a deficient number, since it is larger than the sum of its proper divisors (228685171).

12120311201 is an equidigital number, since it uses as much as digits as its factorization.

12120311201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228685170.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12120311201 its reverse (10211302121), we get a palindrome (22331613322).

The spelling of 12120311201 in words is "twelve billion, one hundred twenty million, three hundred eleven thousand, two hundred one".