221010201010201 has 4 divisors (see below), whose sum is σ = 223672974516432. Its totient is φ = 218347427503972.

The previous prime is 221010201010199. The next prime is 221010201010243. The reversal of 221010201010201 is 102010102010122.

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 221010201010201 - 2¹ = 221010201010199 is a prime.

It is a super-2 number, since 2×221010201010201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221010201014201) 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 3 ways as a sum of consecutive naturals, for example, 1331386752991 + ... + 1331386753156.

It is an arithmetic number, because the mean of its divisors is an integer number (55918243629108).

Almost surely, 2^{221010201010201} is an apocalyptic number.

It is an amenable number.

221010201010201 is a deficient number, since it is larger than the sum of its proper divisors (2662773506231).

221010201010201 is an equidigital number, since it uses as much as digits as its factorization.

221010201010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662773506230.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221010201010201 its reverse (102010102010122), we get a palindrome (323020303020323).

The spelling of 221010201010201 in words is "two hundred twenty-one trillion, ten billion, two hundred one million, ten thousand, two hundred one".