221033232001 has 2 divisors, whose sum is σ = 221033232002. Its totient is φ = 221033232000.

The previous prime is 221033231911. The next prime is 221033232011. The reversal of 221033232001 is 100232330122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219657192976 + 1376039025 = 468676^2 + 37095^2 .

It is a cyclic number.

It is not a de Polignac number, because 221033232001 - 2¹⁹ = 221032707713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221033232001.

It is not a weakly prime, because it can be changed into another prime (221033232011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110516616000 + 110516616001.

It is an arithmetic number, because the mean of its divisors is an integer number (110516616001).

Almost surely, 2^221033232001 is an apocalyptic number.

It is an amenable number.

221033232001 is a deficient number, since it is larger than the sum of its proper divisors (1).

221033232001 is an equidigital number, since it uses as much as digits as its factorization.

221033232001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221033232001 its reverse (100232330122), we get a palindrome (321265562123).

The spelling of 221033232001 in words is "two hundred twenty-one billion, thirty-three million, two hundred thirty-two thousand, one".