131223120230121 has 64 divisors (see below), whose sum is σ = 187550363320320. Its totient is φ = 81428745726720.

The previous prime is 131223120230119. The next prime is 131223120230123. The reversal of 131223120230121 is 121032021322131.

It is an interprime number because it is at equal distance from previous prime (131223120230119) and next prime (131223120230123).

It is not a de Polignac number, because 131223120230121 - 2¹ = 131223120230119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131223120230091 and 131223120230100.

It is not an unprimeable number, because it can be changed into a prime (131223120230123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 888207360 + ... + 888355086.

It is an arithmetic number, because the mean of its divisors is an integer number (2930474426880).

Almost surely, 2^{131223120230121} is an apocalyptic number.

It is an amenable number.

131223120230121 is a deficient number, since it is larger than the sum of its proper divisors (56327243090199).

131223120230121 is a wasteful number, since it uses less digits than its factorization.

131223120230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149046.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 131223120230121 its reverse (121032021322131), we get a palindrome (252255141552252).

The spelling of 131223120230121 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, one hundred twenty million, two hundred thirty thousand, one hundred twenty-one".