200121120200111 has 16 divisors (see below), whose sum is σ = 218359916878848. Its totient is φ = 181889988890400.

The previous prime is 200121120200083. The next prime is 200121120200219. The reversal of 200121120200111 is 111002021121002.

It is a cyclic number.

It is not a de Polignac number, because 200121120200111 - 2⁶ = 200121120200047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121120500111) 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, 1080352481 + ... + 1080537701.

It is an arithmetic number, because the mean of its divisors is an integer number (13647494804928).

Almost surely, 2^{200121120200111} is an apocalyptic number.

200121120200111 is a deficient number, since it is larger than the sum of its proper divisors (18238796678737).

200121120200111 is a wasteful number, since it uses less digits than its factorization.

200121120200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205382.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200121120200111 its reverse (111002021121002), we get a palindrome (311123141321113).

It can be divided in two parts, 2001 and 21120200111, that added together give a palindrome (21120202112).

The spelling of 200121120200111 in words is "two hundred trillion, one hundred twenty-one billion, one hundred twenty million, two hundred thousand, one hundred eleven".