331221033222131 has 8 divisors (see below), whose sum is σ = 356987932845264. Its totient is φ = 305495327685600.

The previous prime is 331221033222109. The next prime is 331221033222161. The reversal of 331221033222131 is 131222330122133.

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

It is not a de Polignac number, because 331221033222131 - 2¹⁸ = 331221032959987 is a prime.

It is a super-2 number, since 2×331221033222131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331221033222094 and 331221033222103.

It is not an unprimeable number, because it can be changed into a prime (331221033222161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10298504945 + ... + 10298537106.

It is an arithmetic number, because the mean of its divisors is an integer number (44623491605658).

Almost surely, 2^{331221033222131} is an apocalyptic number.

331221033222131 is a deficient number, since it is larger than the sum of its proper divisors (25766899623133).

331221033222131 is a wasteful number, since it uses less digits than its factorization.

331221033222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20597043301.

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

Adding to 331221033222131 its reverse (131222330122133), we get a palindrome (462443363344264).

The spelling of 331221033222131 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, thirty-three million, two hundred twenty-two thousand, one hundred thirty-one".