131021332332221 has 32 divisors (see below), whose sum is σ = 139292560382976. Its totient is φ = 122814120672000.

The previous prime is 131021332332199. The next prime is 131021332332299. The reversal of 131021332332221 is 122233233120131.

It is a cyclic number.

It is not a de Polignac number, because 131021332332221 - 2⁶ = 131021332332157 is a prime.

It is a super-2 number, since 2×131021332332221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021332302221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7738538126 + ... + 7738555056.

It is an arithmetic number, because the mean of its divisors is an integer number (4352892511968).

Almost surely, 2^{131021332332221} is an apocalyptic number.

It is an amenable number.

131021332332221 is a deficient number, since it is larger than the sum of its proper divisors (8271228050755).

131021332332221 is a wasteful number, since it uses less digits than its factorization.

131021332332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19313.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 131021332332221 its reverse (122233233120131), we get a palindrome (253254565452352).

The spelling of 131021332332221 in words is "one hundred thirty-one trillion, twenty-one billion, three hundred thirty-two million, three hundred thirty-two thousand, two hundred twenty-one".