200121000211111 has 16 divisors (see below), whose sum is σ = 243731351660544. Its totient is φ = 160583416576704.

The previous prime is 200121000211091. The next prime is 200121000211123. The reversal of 200121000211111 is 111112000121002.

It is a happy number.

It is not a de Polignac number, because 200121000211111 - 2²³ = 200120991822503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121000211091 and 200121000211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121000511111) 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, 13223264550 + ... + 13223279683.

It is an arithmetic number, because the mean of its divisors is an integer number (15233209478784).

Almost surely, 2^{200121000211111} is an apocalyptic number.

200121000211111 is a deficient number, since it is larger than the sum of its proper divisors (43610351449433).

200121000211111 is a wasteful number, since it uses less digits than its factorization.

200121000211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26446544310.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 200121000211111 its reverse (111112000121002), we get a palindrome (311233000332113).

The spelling of 200121000211111 in words is "two hundred trillion, one hundred twenty-one billion, two hundred eleven thousand, one hundred eleven".