200111121010 has 16 divisors (see below), whose sum is σ = 361772947800. Its totient is φ = 79694908416.

The previous prime is 200111120977. The next prime is 200111121013. The reversal of 200111121010 is 10121111002.

It can be written as a sum of positive squares in 4 ways, for example, as 194557741569 + 5553379441 = 441087^2 + 74521^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (200111121013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43690095 + ... + 43694674.

Almost surely, 2^200111121010 is an apocalyptic number.

200111121010 is a deficient number, since it is larger than the sum of its proper divisors (161661826790).

200111121010 is a wasteful number, since it uses less digits than its factorization.

200111121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87385005.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 200111121010 its reverse (10121111002), we get a palindrome (210232232012).

The spelling of 200111121010 in words is "two hundred billion, one hundred eleven million, one hundred twenty-one thousand, ten".