200211001011221 has 4 divisors (see below), whose sum is σ = 203493148568844. Its totient is φ = 196928853453600.

The previous prime is 200211001011211. The next prime is 200211001011271. The reversal of 200211001011221 is 122110100112002.

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 55454249391121 + 144756751620100 = 7446761^2 + 12031490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200211001011221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200211001011196 and 200211001011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211001011211) 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, 1641073778720 + ... + 1641073778841.

It is an arithmetic number, because the mean of its divisors is an integer number (50873287142211).

Almost surely, 2^{200211001011221} is an apocalyptic number.

It is an amenable number.

200211001011221 is a deficient number, since it is larger than the sum of its proper divisors (3282147557623).

200211001011221 is an equidigital number, since it uses as much as digits as its factorization.

200211001011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282147557622.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200211001011221 its reverse (122110100112002), we get a palindrome (322321101123223).

The spelling of 200211001011221 in words is "two hundred trillion, two hundred eleven billion, one million, eleven thousand, two hundred twenty-one".