131221240330201 has 16 divisors (see below), whose sum is σ = 149994215648640. Its totient is φ = 112455037607040.

The previous prime is 131221240330183. The next prime is 131221240330223. The reversal of 131221240330201 is 102033042122131.

It is a cyclic number.

It is not a de Polignac number, because 131221240330201 - 2¹⁹ = 131221239805913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131221240330241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1238713005 + ... + 1238818933.

It is an arithmetic number, because the mean of its divisors is an integer number (9374638478040).

Almost surely, 2^{131221240330201} is an apocalyptic number.

It is an amenable number.

131221240330201 is a deficient number, since it is larger than the sum of its proper divisors (18772975318439).

131221240330201 is a wasteful number, since it uses less digits than its factorization.

131221240330201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136224.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 131221240330201 its reverse (102033042122131), we get a palindrome (233254282452332).

The spelling of 131221240330201 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, two hundred forty million, three hundred thirty thousand, two hundred one".