221031330123001 has 2 divisors, whose sum is σ = 221031330123002. Its totient is φ = 221031330123000.

The previous prime is 221031330122969. The next prime is 221031330123059. The reversal of 221031330123001 is 100321033130122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220416305587776 + 615024535225 = 14846424^2 + 784235^2 .

It is a cyclic number.

It is not a de Polignac number, because 221031330123001 - 2⁵ = 221031330122969 is a prime.

It is not a weakly prime, because it can be changed into another prime (221031330123061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110515665061500 + 110515665061501.

It is an arithmetic number, because the mean of its divisors is an integer number (110515665061501).

Almost surely, 2^{221031330123001} is an apocalyptic number.

It is an amenable number.

221031330123001 is a deficient number, since it is larger than the sum of its proper divisors (1).

221031330123001 is an equidigital number, since it uses as much as digits as its factorization.

221031330123001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 221031330123001 its reverse (100321033130122), we get a palindrome (321352363253123).

The spelling of 221031330123001 in words is "two hundred twenty-one trillion, thirty-one billion, three hundred thirty million, one hundred twenty-three thousand, one".