200000111121 has 16 divisors (see below), whose sum is σ = 296304160320. Its totient is φ = 133329942720.

The previous prime is 200000111107. The next prime is 200000111137. The reversal of 200000111121 is 121111000002.

It is a happy number.

It is not a de Polignac number, because 200000111121 - 2⁷ = 200000110993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (200000121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1365961 + ... + 1505273.

It is an arithmetic number, because the mean of its divisors is an integer number (18519010020).

Almost surely, 2^200000111121 is an apocalyptic number.

It is an amenable number.

200000111121 is a deficient number, since it is larger than the sum of its proper divisors (96304049199).

200000111121 is a wasteful number, since it uses less digits than its factorization.

200000111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192493 (or 192487 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 200000111121 its reverse (121111000002), we get a palindrome (321111111123).

The spelling of 200000111121 in words is "two hundred billion, one hundred eleven thousand, one hundred twenty-one".