321121231332001 has 2 divisors, whose sum is σ = 321121231332002. Its totient is φ = 321121231332000.

The previous prime is 321121231331993. The next prime is 321121231332049. The reversal of 321121231332001 is 100233132121123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212049630581776 + 109071600750225 = 14561924^2 + 10443735^2 .

It is an emirp because it is prime and its reverse (100233132121123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321121231332001 - 2³ = 321121231331993 is a prime.

It is not a weakly prime, because it can be changed into another prime (321121231332071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160560615666000 + 160560615666001.

It is an arithmetic number, because the mean of its divisors is an integer number (160560615666001).

Almost surely, 2^{321121231332001} is an apocalyptic number.

It is an amenable number.

321121231332001 is a deficient number, since it is larger than the sum of its proper divisors (1).

321121231332001 is an equidigital number, since it uses as much as digits as its factorization.

321121231332001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 321121231332001 its reverse (100233132121123), we get a palindrome (421354363453124).

The spelling of 321121231332001 in words is "three hundred twenty-one trillion, one hundred twenty-one billion, two hundred thirty-one million, three hundred thirty-two thousand, one".