131212321122223 has 16 divisors (see below), whose sum is σ = 151561130724000. Its totient is φ = 112266949017600.

The previous prime is 131212321122191. The next prime is 131212321122229. The reversal of 131212321122223 is 322221123212131.

It is a cyclic number.

It is not a de Polignac number, because 131212321122223 - 2⁵ = 131212321122191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131212321122191 and 131212321122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212321122229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119473903 + ... + 120567151.

It is an arithmetic number, because the mean of its divisors is an integer number (9472570670250).

Almost surely, 2^{131212321122223} is an apocalyptic number.

131212321122223 is a deficient number, since it is larger than the sum of its proper divisors (20348809601777).

131212321122223 is a wasteful number, since it uses less digits than its factorization.

131212321122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735098.

The product of its digits is 3456, while the sum is 28.

Adding to 131212321122223 its reverse (322221123212131), we get a palindrome (453433444334354).

The spelling of 131212321122223 in words is "one hundred thirty-one trillion, two hundred twelve billion, three hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".