121210200200111 has 16 divisors (see below), whose sum is σ = 133723902909600. Its totient is φ = 108945760704000.

The previous prime is 121210200200093. The next prime is 121210200200153. The reversal of 121210200200111 is 111002002012121.

It is not a de Polignac number, because 121210200200111 - 2³⁸ = 120935322293167 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 (121210200203111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10684475 + ... + 18883283.

It is an arithmetic number, because the mean of its divisors is an integer number (8357743931850).

Almost surely, 2^{121210200200111} is an apocalyptic number.

121210200200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121210200200111 is a deficient number, since it is larger than the sum of its proper divisors (12513702709489).

121210200200111 is a wasteful number, since it uses less digits than its factorization.

121210200200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8214010.

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

Adding to 121210200200111 its reverse (111002002012121), we get a palindrome (232212202212232).

The spelling of 121210200200111 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred million, two hundred thousand, one hundred eleven".