131221330221301 has 16 divisors (see below), whose sum is σ = 135629471416320. Its totient is φ = 126824164593840.

The previous prime is 131221330221283. The next prime is 131221330221313. The reversal of 131221330221301 is 103122033122131.

It is a cyclic number.

It is not a de Polignac number, because 131221330221301 - 2⁷ = 131221330221173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221330231301) 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, 313562140 + ... + 313980346.

It is an arithmetic number, because the mean of its divisors is an integer number (8476841963520).

Almost surely, 2^{131221330221301} is an apocalyptic number.

It is an amenable number.

131221330221301 is a deficient number, since it is larger than the sum of its proper divisors (4408141195019).

131221330221301 is a wasteful number, since it uses less digits than its factorization.

131221330221301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431304.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 131221330221301 its reverse (103122033122131), we get a palindrome (234343363343432).

The spelling of 131221330221301 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty million, two hundred twenty-one thousand, three hundred one".