200121111202103 has 24 divisors (see below), whose sum is σ = 253001183117760. Its totient is φ = 156884944063680.

The previous prime is 200121111202099. The next prime is 200121111202163. The reversal of 200121111202103 is 301202111121002.

It is a happy number.

It is not a de Polignac number, because 200121111202103 - 2² = 200121111202099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121111202163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1441040063 + ... + 1441178928.

It is an arithmetic number, because the mean of its divisors is an integer number (10541715963240).

Almost surely, 2^{200121111202103} is an apocalyptic number.

200121111202103 is a deficient number, since it is larger than the sum of its proper divisors (52880071915657).

200121111202103 is a wasteful number, since it uses less digits than its factorization.

200121111202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882219127 (or 2882219120 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 200121111202103 its reverse (301202111121002), we get a palindrome (501323222323105).

The spelling of 200121111202103 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, two hundred two thousand, one hundred three".