221112002021201 has 8 divisors (see below), whose sum is σ = 224142594356904. Its totient is φ = 218081454572160.

The previous prime is 221112002021101. The next prime is 221112002021203. The reversal of 221112002021201 is 102120200211122.

It can be written as a sum of positive squares in 4 ways, for example, as 2926754522176 + 218185247499025 = 1710776^2 + 14771095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221112002021201 - 2¹⁸ = 221112001759057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221112002021201.

It is not an unprimeable number, because it can be changed into a prime (221112002021203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241726 + ... + 21065751.

It is an arithmetic number, because the mean of its divisors is an integer number (28017824294613).

Almost surely, 2^{221112002021201} is an apocalyptic number.

It is an amenable number.

221112002021201 is a deficient number, since it is larger than the sum of its proper divisors (3030592335703).

221112002021201 is a wasteful number, since it uses less digits than its factorization.

221112002021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22443331.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221112002021201 its reverse (102120200211122), we get a palindrome (323232202232323).

The spelling of 221112002021201 in words is "two hundred twenty-one trillion, one hundred twelve billion, two million, twenty-one thousand, two hundred one".