12123020235 has 16 divisors (see below), whose sum is σ = 19429228800. Its totient is φ = 6454812000.

The previous prime is 12123020201. The next prime is 12123020269. The reversal of 12123020235 is 53202032121.

It is an interprime number because it is at equal distance from previous prime (12123020201) and next prime (12123020269).

It is not a de Polignac number, because 12123020235 - 2⁹ = 12123019723 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665641 + ... + 683610.

It is an arithmetic number, because the mean of its divisors is an integer number (1214326800).

Almost surely, 2^12123020235 is an apocalyptic number.

12123020235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12123020235 is a deficient number, since it is larger than the sum of its proper divisors (7306208565).

12123020235 is a wasteful number, since it uses less digits than its factorization.

12123020235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349858.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 12123020235 its reverse (53202032121), we get a palindrome (65325052356).

The spelling of 12123020235 in words is "twelve billion, one hundred twenty-three million, twenty thousand, two hundred thirty-five".