131022333221 has 16 divisors (see below), whose sum is σ = 142071068160. Its totient is φ = 120112588800.

The previous prime is 131022333193. The next prime is 131022333287. The reversal of 131022333221 is 122333220131.

It is a cyclic number.

It is not a de Polignac number, because 131022333221 - 2⁶ = 131022333157 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 (131022333121) 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, 12811316 + ... + 12821538.

It is an arithmetic number, because the mean of its divisors is an integer number (8879441760).

Almost surely, 2^131022333221 is an apocalyptic number.

It is an amenable number.

131022333221 is a deficient number, since it is larger than the sum of its proper divisors (11048734939).

131022333221 is a wasteful number, since it uses less digits than its factorization.

131022333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16916.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 131022333221 its reverse (122333220131), we get a palindrome (253355553352).

The spelling of 131022333221 in words is "one hundred thirty-one billion, twenty-two million, three hundred thirty-three thousand, two hundred twenty-one".