221001310231033 has 2 divisors, whose sum is σ = 221001310231034. Its totient is φ = 221001310231032.

The previous prime is 221001310231027. The next prime is 221001310231049. The reversal of 221001310231033 is 330132013100122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204845709754624 + 16155600476409 = 14312432^2 + 4019403^2 .

It is a cyclic number.

It is not a de Polignac number, because 221001310231033 - 2²⁵ = 221001276676601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221001310230995 and 221001310231013.

It is not a weakly prime, because it can be changed into another prime (221001310531033) 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 as a sum of consecutive naturals, namely, 110500655115516 + 110500655115517.

It is an arithmetic number, because the mean of its divisors is an integer number (110500655115517).

Almost surely, 2^{221001310231033} is an apocalyptic number.

It is an amenable number.

221001310231033 is a deficient number, since it is larger than the sum of its proper divisors (1).

221001310231033 is an equidigital number, since it uses as much as digits as its factorization.

221001310231033 is an odious number, because the sum of its binary digits is odd.

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

Adding to 221001310231033 its reverse (330132013100122), we get a palindrome (551133323331155).

The spelling of 221001310231033 in words is "two hundred twenty-one trillion, one billion, three hundred ten million, two hundred thirty-one thousand, thirty-three".