321130142221 has 32 divisors (see below), whose sum is σ = 383778904832. Its totient is φ = 262960680960.

The previous prime is 321130142197. The next prime is 321130142237. The reversal of 321130142221 is 122241031123.

It is a cyclic number.

It is not a de Polignac number, because 321130142221 - 2¹⁹ = 321129617933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321130142192 and 321130142201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321130142521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9098410 + ... + 9133636.

It is an arithmetic number, because the mean of its divisors is an integer number (11993090776).

Almost surely, 2^321130142221 is an apocalyptic number.

It is an amenable number.

321130142221 is a deficient number, since it is larger than the sum of its proper divisors (62648762611).

321130142221 is a wasteful number, since it uses less digits than its factorization.

321130142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35909.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 321130142221 its reverse (122241031123), we get a palindrome (443371173344).

The spelling of 321130142221 in words is "three hundred twenty-one billion, one hundred thirty million, one hundred forty-two thousand, two hundred twenty-one".