200111121009 has 48 divisors (see below), whose sum is σ = 301133274624. Its totient is φ = 127952524800.

The previous prime is 200111120977. The next prime is 200111121013. The reversal of 200111121009 is 900121111002.

It is a happy number.

It is not a de Polignac number, because 200111121009 - 2⁵ = 200111120977 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200111120982 and 200111121000.

It is not an unprimeable number, because it can be changed into a prime (200111121019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8365464 + ... + 8389350.

It is an arithmetic number, because the mean of its divisors is an integer number (6273609888).

Almost surely, 2^200111121009 is an apocalyptic number.

It is an amenable number.

200111121009 is a deficient number, since it is larger than the sum of its proper divisors (101022153615).

200111121009 is a wasteful number, since it uses less digits than its factorization.

200111121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24318 (or 24315 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 200111121009 in words is "two hundred billion, one hundred eleven million, one hundred twenty-one thousand, nine".