131120221123 has 4 divisors (see below), whose sum is σ = 131593579600. Its totient is φ = 130646862648.

The previous prime is 131120221121. The next prime is 131120221151. The reversal of 131120221123 is 321122021131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131120221123 - 2¹ = 131120221121 is a prime.

It is a super-2 number, since 2×131120221123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131120221123.

It is not an unprimeable number, because it can be changed into a prime (131120221121) by changing a digit.

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, 236678823 + ... + 236679376.

It is an arithmetic number, because the mean of its divisors is an integer number (32898394900).

Almost surely, 2^131120221123 is an apocalyptic number.

131120221123 is a deficient number, since it is larger than the sum of its proper divisors (473358477).

131120221123 is an equidigital number, since it uses as much as digits as its factorization.

131120221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473358476.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131120221123 its reverse (321122021131), we get a palindrome (452242242254).

The spelling of 131120221123 in words is "one hundred thirty-one billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-three".