221022100201 has 4 divisors (see below), whose sum is σ = 252596685952. Its totient is φ = 189447514452.

The previous prime is 221022100193. The next prime is 221022100331. The reversal of 221022100201 is 102001220122.

It is a happy number.

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 not a de Polignac number, because 221022100201 - 2³ = 221022100193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022100001) 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, 15787292865 + ... + 15787292878.

It is an arithmetic number, because the mean of its divisors is an integer number (63149171488).

Almost surely, 2^221022100201 is an apocalyptic number.

It is an amenable number.

221022100201 is a deficient number, since it is larger than the sum of its proper divisors (31574585751).

221022100201 is an equidigital number, since it uses as much as digits as its factorization.

221022100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31574585750.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221022100201 its reverse (102001220122), we get a palindrome (323023320323).

The spelling of 221022100201 in words is "two hundred twenty-one billion, twenty-two million, one hundred thousand, two hundred one".