131133313221 has 8 divisors (see below), whose sum is σ = 178143369120. Its totient is φ = 85772733072.

The previous prime is 131133313147. The next prime is 131133313247. The reversal of 131133313221 is 122313331131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131133313221 - 2²⁹ = 130596442309 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131133313191 and 131133313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131133313121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412368751 + ... + 412369068.

It is an arithmetic number, because the mean of its divisors is an integer number (22267921140).

Almost surely, 2^131133313221 is an apocalyptic number.

It is an amenable number.

131133313221 is a deficient number, since it is larger than the sum of its proper divisors (47010055899).

131133313221 is an equidigital number, since it uses as much as digits as its factorization.

131133313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824737875.

The product of its digits is 972, while the sum is 24.

Adding to 131133313221 its reverse (122313331131), we get a palindrome (253446644352).

The spelling of 131133313221 in words is "one hundred thirty-one billion, one hundred thirty-three million, three hundred thirteen thousand, two hundred twenty-one".