221010110201 has 4 divisors (see below), whose sum is σ = 221046164304. Its totient is φ = 220974056100.

The previous prime is 221010110141. The next prime is 221010110219. The reversal of 221010110201 is 102011010122.

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 not a de Polignac number, because 221010110201 - 2⁶ = 221010110137 is a prime.

It is a super-2 number, since 2×221010110201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221010110281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18017855 + ... + 18030116.

It is an arithmetic number, because the mean of its divisors is an integer number (55261541076).

Almost surely, 2^221010110201 is an apocalyptic number.

It is an amenable number.

221010110201 is a deficient number, since it is larger than the sum of its proper divisors (36054103).

221010110201 is an equidigital number, since it uses as much as digits as its factorization.

221010110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36054102.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221010110201 its reverse (102011010122), we get a palindrome (323021120323).

The spelling of 221010110201 in words is "two hundred twenty-one billion, ten million, one hundred ten thousand, two hundred one".