200121001010111 has 16 divisors (see below), whose sum is σ = 213077777071104. Its totient is φ = 187698563523744.

The previous prime is 200121001010041. The next prime is 200121001010137. The reversal of 200121001010111 is 111010100121002.

It is not a de Polignac number, because 200121001010111 - 2³⁸ = 199846123103167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121001010092 and 200121001010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121001010141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934051211 + ... + 934265436.

It is an arithmetic number, because the mean of its divisors is an integer number (13317361066944).

Almost surely, 2^{200121001010111} is an apocalyptic number.

200121001010111 is a deficient number, since it is larger than the sum of its proper divisors (12956776060993).

200121001010111 is a wasteful number, since it uses less digits than its factorization.

200121001010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868316790.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 200121001010111 its reverse (111010100121002), we get a palindrome (311131101131113).

The spelling of 200121001010111 in words is "two hundred trillion, one hundred twenty-one billion, one million, ten thousand, one hundred eleven".