200111021011221 has 4 divisors (see below), whose sum is σ = 266814694681632. Its totient is φ = 133407347340812.

The previous prime is 200111021011199. The next prime is 200111021011327. The reversal of 200111021011221 is 122110120111002.

It is a happy number.

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 200111021011221 - 2⁶ = 200111021011157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200111021011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200111021011021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33351836835201 + ... + 33351836835206.

It is an arithmetic number, because the mean of its divisors is an integer number (66703673670408).

Almost surely, 2^{200111021011221} is an apocalyptic number.

It is an amenable number.

200111021011221 is a deficient number, since it is larger than the sum of its proper divisors (66703673670411).

200111021011221 is an equidigital number, since it uses as much as digits as its factorization.

200111021011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66703673670410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 200111021011221 its reverse (122110120111002), we get a palindrome (322221141122223).

The spelling of 200111021011221 in words is "two hundred trillion, one hundred eleven billion, twenty-one million, eleven thousand, two hundred twenty-one".