121112100201 has 12 divisors (see below), whose sum is σ = 168809054288. Its totient is φ = 77230903464.

The previous prime is 121112100191. The next prime is 121112100203. The reversal of 121112100201 is 102001211121.

It is not a de Polignac number, because 121112100201 - 2⁵ = 121112100169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121112100203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38155975 + ... + 38159148.

Almost surely, 2^121112100201 is an apocalyptic number.

It is an amenable number.

121112100201 is a deficient number, since it is larger than the sum of its proper divisors (47696954087).

121112100201 is an equidigital number, since it uses as much as digits as its factorization.

121112100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76315172 (or 76315149 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121112100201 its reverse (102001211121), we get a palindrome (223113311322).

The spelling of 121112100201 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred thousand, two hundred one".