221300032001 has 4 divisors (see below), whose sum is σ = 222458671104. Its totient is φ = 220141392900.

The previous prime is 221300031961. The next prime is 221300032027. The reversal of 221300032001 is 100230003122.

It is a happy number.

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-221300032001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221300032501) 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, 579319265 + ... + 579319646.

It is an arithmetic number, because the mean of its divisors is an integer number (55614667776).

Almost surely, 2^221300032001 is an apocalyptic number.

It is an amenable number.

221300032001 is a deficient number, since it is larger than the sum of its proper divisors (1158639103).

221300032001 is a wasteful number, since it uses less digits than its factorization.

221300032001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158639102.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 221300032001 its reverse (100230003122), we get a palindrome (321530035123).

The spelling of 221300032001 in words is "two hundred twenty-one billion, three hundred million, thirty-two thousand, one".