200012012331221 has 8 divisors (see below), whose sum is σ = 200254168370520. Its totient is φ = 199769914052608.

The previous prime is 200012012331181. The next prime is 200012012331223. The reversal of 200012012331221 is 122133210210002.

It can be written as a sum of positive squares in 4 ways, for example, as 19850143622500 + 180161868708721 = 4455350^2 + 13422439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200012012331221 - 2⁴⁶ = 129643268153557 is a prime.

It is a super-2 number, since 2×200012012331221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200012012331193 and 200012012331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012012331223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7508426 + ... + 21363531.

It is an arithmetic number, because the mean of its divisors is an integer number (25031771046315).

Almost surely, 2^{200012012331221} is an apocalyptic number.

It is an amenable number.

200012012331221 is a deficient number, since it is larger than the sum of its proper divisors (242156039299).

200012012331221 is an equidigital number, since it uses as much as digits as its factorization.

200012012331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28880343.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 200012012331221 its reverse (122133210210002), we get a palindrome (322145222541223).

The spelling of 200012012331221 in words is "two hundred trillion, twelve billion, twelve million, three hundred thirty-one thousand, two hundred twenty-one".