221212110201 has 8 divisors (see below), whose sum is σ = 298503088800. Its totient is φ = 145697935872.

The previous prime is 221212110199. The next prime is 221212110277. The reversal of 221212110201 is 102011212122.

221212110201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221212110201 - 2¹ = 221212110199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221212110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444200776 + ... + 444201273.

It is an arithmetic number, because the mean of its divisors is an integer number (37312886100).

Almost surely, 2^221212110201 is an apocalyptic number.

It is an amenable number.

221212110201 is a deficient number, since it is larger than the sum of its proper divisors (77290978599).

221212110201 is an equidigital number, since it uses as much as digits as its factorization.

221212110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888402135.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221212110201 its reverse (102011212122), we get a palindrome (323223322323).

The spelling of 221212110201 in words is "two hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, two hundred one".