222201010100221 has 4 divisors (see below), whose sum is σ = 222373125523744. Its totient is φ = 222028894676700.

The previous prime is 222201010100213. The next prime is 222201010100227. The reversal of 222201010100221 is 122001010102222.

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 a cyclic number.

It is not a de Polignac number, because 222201010100221 - 2³ = 222201010100213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222201010100195 and 222201010100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201010100227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86057709825 + ... + 86057712406.

It is an arithmetic number, because the mean of its divisors is an integer number (55593281380936).

Almost surely, 2^{222201010100221} is an apocalyptic number.

It is an amenable number.

222201010100221 is a deficient number, since it is larger than the sum of its proper divisors (172115423523).

222201010100221 is a wasteful number, since it uses less digits than its factorization.

222201010100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172115423522.

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

Adding to 222201010100221 its reverse (122001010102222), we get a palindrome (344202020202443).

The spelling of 222201010100221 in words is "two hundred twenty-two trillion, two hundred one billion, ten million, one hundred thousand, two hundred twenty-one".