131202320221 has 16 divisors (see below), whose sum is σ = 150356826880. Its totient is φ = 112150811520.

The previous prime is 131202320219. The next prime is 131202320257. The reversal of 131202320221 is 122023202131.

It is a cyclic number.

It is not a de Polignac number, because 131202320221 - 2¹ = 131202320219 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 (131202320021) 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, 17280136 + ... + 17287726.

It is an arithmetic number, because the mean of its divisors is an integer number (9397301680).

Almost surely, 2^131202320221 is an apocalyptic number.

It is an amenable number.

131202320221 is a deficient number, since it is larger than the sum of its proper divisors (19154506659).

131202320221 is an equidigital number, since it uses as much as digits as its factorization.

131202320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14044.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 131202320221 its reverse (122023202131), we get a palindrome (253225522352).

The spelling of 131202320221 in words is "one hundred thirty-one billion, two hundred two million, three hundred twenty thousand, two hundred twenty-one".