221333211001 has 16 divisors (see below), whose sum is σ = 265849113600. Its totient is φ = 180160211088.

The previous prime is 221333210941. The next prime is 221333211007. The reversal of 221333211001 is 100112333122.

It is not a de Polignac number, because 221333211001 - 2¹¹ = 221333208953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221333211001.

It is not an unprimeable number, because it can be changed into a prime (221333211007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922731 + ... + 4967488.

It is an arithmetic number, because the mean of its divisors is an integer number (16615569600).

Almost surely, 2^221333211001 is an apocalyptic number.

It is an amenable number.

221333211001 is a deficient number, since it is larger than the sum of its proper divisors (44515902599).

221333211001 is a wasteful number, since it uses less digits than its factorization.

221333211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890388.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221333211001 its reverse (100112333122), we get a palindrome (321445544123).

The spelling of 221333211001 in words is "two hundred twenty-one billion, three hundred thirty-three million, two hundred eleven thousand, one".