222001100200221 has 4 divisors (see below), whose sum is σ = 296001466933632. Its totient is φ = 148000733466812.

The previous prime is 222001100200171. The next prime is 222001100200279. The reversal of 222001100200221 is 122002001100222.

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 222001100200221 - 2⁹ = 222001100199709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222001100200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001100208221) 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, 37000183366701 + ... + 37000183366706.

It is an arithmetic number, because the mean of its divisors is an integer number (74000366733408).

Almost surely, 2^{222001100200221} is an apocalyptic number.

It is an amenable number.

222001100200221 is a deficient number, since it is larger than the sum of its proper divisors (74000366733411).

222001100200221 is an equidigital number, since it uses as much as digits as its factorization.

222001100200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74000366733410.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222001100200221 its reverse (122002001100222), we get a palindrome (344003101300443).

Subtracting from 222001100200221 its reverse (122002001100222), we obtain a palindrome (99999099099999).

The spelling of 222001100200221 in words is "two hundred twenty-two trillion, one billion, one hundred million, two hundred thousand, two hundred twenty-one".