200211001212221 has 4 divisors (see below), whose sum is σ = 200211220884444. Its totient is φ = 200210781540000.

The previous prime is 200211001212217. The next prime is 200211001212247. The reversal of 200211001212221 is 122212100112002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33180940884100 + 167030060328121 = 5760290^2 + 12924011^2 .

It is a cyclic number.

It is not a de Polignac number, because 200211001212221 - 2² = 200211001212217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200211001212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211001214221) 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, 108463280 + ... + 110293721.

It is an arithmetic number, because the mean of its divisors is an integer number (50052805221111).

Almost surely, 2^{200211001212221} is an apocalyptic number.

It is an amenable number.

200211001212221 is a deficient number, since it is larger than the sum of its proper divisors (219672223).

200211001212221 is an equidigital number, since it uses as much as digits as its factorization.

200211001212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219672222.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200211001212221 its reverse (122212100112002), we get a palindrome (322423101324223).

The spelling of 200211001212221 in words is "two hundred trillion, two hundred eleven billion, one million, two hundred twelve thousand, two hundred twenty-one".