131003011331221 has 16 divisors (see below), whose sum is σ = 134190752993280. Its totient is φ = 127854384381360.

The previous prime is 131003011331189. The next prime is 131003011331239. The reversal of 131003011331221 is 122133110300131.

It is a cyclic number.

It is not a de Polignac number, because 131003011331221 - 2⁵ = 131003011331189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131003011331192 and 131003011331201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131003011331021) 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, 3583840 + ... + 16578598.

It is an arithmetic number, because the mean of its divisors is an integer number (8386922062080).

Almost surely, 2^{131003011331221} is an apocalyptic number.

It is an amenable number.

131003011331221 is a deficient number, since it is larger than the sum of its proper divisors (3187741662059).

131003011331221 is a wasteful number, since it uses less digits than its factorization.

131003011331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12996264.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 131003011331221 its reverse (122133110300131), we get a palindrome (253136121631352).

The spelling of 131003011331221 in words is "one hundred thirty-one trillion, three billion, eleven million, three hundred thirty-one thousand, two hundred twenty-one".