12120203135 has 4 divisors (see below), whose sum is σ = 14544243768. Its totient is φ = 9696162504.

The previous prime is 12120203107. The next prime is 12120203143. The reversal of 12120203135 is 53130202121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53130202121 = 577 ⋅92080073.

It is a cyclic number.

It is not a de Polignac number, because 12120203135 - 2¹⁰ = 12120202111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1212020309 + ... + 1212020318.

It is an arithmetic number, because the mean of its divisors is an integer number (3636060942).

Almost surely, 2^12120203135 is an apocalyptic number.

12120203135 is a deficient number, since it is larger than the sum of its proper divisors (2424040633).

12120203135 is an equidigital number, since it uses as much as digits as its factorization.

12120203135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424040632.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12120203135 its reverse (53130202121), we get a palindrome (65250405256).

The spelling of 12120203135 in words is "twelve billion, one hundred twenty million, two hundred three thousand, one hundred thirty-five".