12120202319 has 4 divisors (see below), whose sum is σ = 12538140360. Its totient is φ = 11702264280.

The previous prime is 12120202271. The next prime is 12120202321. The reversal of 12120202319 is 91320202121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91320202121 = 262391 ⋅348031.

It is a cyclic number.

It is not a de Polignac number, because 12120202319 - 2⁸ = 12120202063 is a prime.

It is a super-2 number, since 2×12120202319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120202294 and 12120202303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120202349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 208968977 + ... + 208969034.

It is an arithmetic number, because the mean of its divisors is an integer number (3134535090).

Almost surely, 2^12120202319 is an apocalyptic number.

12120202319 is a deficient number, since it is larger than the sum of its proper divisors (417938041).

12120202319 is an equidigital number, since it uses as much as digits as its factorization.

12120202319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417938040.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 12120202319 in words is "twelve billion, one hundred twenty million, two hundred two thousand, three hundred nineteen".