200100111001221 has 4 divisors (see below), whose sum is σ = 266800148001632. Its totient is φ = 133400074000812.

The previous prime is 200100111001213. The next prime is 200100111001267. The reversal of 200100111001221 is 122100111001002.

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 not a de Polignac number, because 200100111001221 - 2³ = 200100111001213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200100111001197 and 200100111001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200100111051221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33350018500201 + ... + 33350018500206.

It is an arithmetic number, because the mean of its divisors is an integer number (66700037000408).

Almost surely, 2^{200100111001221} is an apocalyptic number.

It is an amenable number.

200100111001221 is a deficient number, since it is larger than the sum of its proper divisors (66700037000411).

200100111001221 is an equidigital number, since it uses as much as digits as its factorization.

200100111001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66700037000410.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 200100111001221 its reverse (122100111001002), we get a palindrome (322200222002223).

The spelling of 200100111001221 in words is "two hundred trillion, one hundred billion, one hundred eleven million, one thousand, two hundred twenty-one".