200221112121 has 16 divisors (see below), whose sum is σ = 269576294400. Its totient is φ = 132179577488.

The previous prime is 200221112107. The next prime is 200221112141. The reversal of 200221112121 is 121211122002.

It is a cyclic number.

It is not a de Polignac number, because 200221112121 - 2⁹ = 200221111609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200221112121.

It is not an unprimeable number, because it can be changed into a prime (200221112101) 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 15 ways as a sum of consecutive naturals, for example, 651681 + ... + 908366.

It is an arithmetic number, because the mean of its divisors is an integer number (16848518400).

Almost surely, 2^200221112121 is an apocalyptic number.

It is an amenable number.

200221112121 is a deficient number, since it is larger than the sum of its proper divisors (69355182279).

200221112121 is a wasteful number, since it uses less digits than its factorization.

200221112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560468.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 200221112121 its reverse (121211122002), we get a palindrome (321432234123).

The spelling of 200221112121 in words is "two hundred billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".