221232330001 has 4 divisors (see below), whose sum is σ = 226377267952. Its totient is φ = 216087392052.

The previous prime is 221232329953. The next prime is 221232330019. The reversal of 221232330001 is 100033232122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221232330001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221232330061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572468911 + ... + 2572468996.

It is an arithmetic number, because the mean of its divisors is an integer number (56594316988).

Almost surely, 2^221232330001 is an apocalyptic number.

It is an amenable number.

221232330001 is a deficient number, since it is larger than the sum of its proper divisors (5144937951).

221232330001 is an equidigital number, since it uses as much as digits as its factorization.

221232330001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144937950.

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

Adding to 221232330001 its reverse (100033232122), we get a palindrome (321265562123).

The spelling of 221232330001 in words is "two hundred twenty-one billion, two hundred thirty-two million, three hundred thirty thousand, one".