200221222222221 has 4 divisors (see below), whose sum is σ = 266961629629632. Its totient is φ = 133480814814812.

The previous prime is 200221222222129. The next prime is 200221222222247. The reversal of 200221222222221 is 122222222122002.

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 200221222222221 - 2¹⁸ = 200221221960077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221222222191 and 200221222222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221222222261) 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, 33370203703701 + ... + 33370203703706.

It is an arithmetic number, because the mean of its divisors is an integer number (66740407407408).

Almost surely, 2^{200221222222221} is an apocalyptic number.

It is an amenable number.

200221222222221 is a deficient number, since it is larger than the sum of its proper divisors (66740407407411).

200221222222221 is an equidigital number, since it uses as much as digits as its factorization.

200221222222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66740407407410.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 200221222222221 its reverse (122222222122002), we get a palindrome (322443444344223).

The spelling of 200221222222221 in words is "two hundred trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".