221012122201 has 8 divisors (see below), whose sum is σ = 238025580800. Its totient is φ = 204000453072.

The previous prime is 221012122193. The next prime is 221012122211. The reversal of 221012122201 is 102221210122.

It is a happy number.

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

It is not a de Polignac number, because 221012122201 - 2³ = 221012122193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012122211) 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, 185151 + ... + 690148.

It is an arithmetic number, because the mean of its divisors is an integer number (29753197600).

Almost surely, 2^221012122201 is an apocalyptic number.

It is an amenable number.

221012122201 is a deficient number, since it is larger than the sum of its proper divisors (17013458599).

221012122201 is a wasteful number, since it uses less digits than its factorization.

221012122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894735.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221012122201 its reverse (102221210122), we get a palindrome (323233332323).

It can be divided in two parts, 2210121 and 22201, that added together give a palindrome (2232322).

The spelling of 221012122201 in words is "two hundred twenty-one billion, twelve million, one hundred twenty-two thousand, two hundred one".