12121112100201 has 32 divisors (see below), whose sum is σ = 17690505568512. Its totient is φ = 7336653615360.

The previous prime is 12121112100187. The next prime is 12121112100239. The reversal of 12121112100201 is 10200121112121.

It is a happy number.

It is not a de Polignac number, because 12121112100201 - 2²⁵ = 12121078545769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121112100241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134375551 + ... + 134465723.

It is an arithmetic number, because the mean of its divisors is an integer number (552828299016).

Almost surely, 2^{12121112100201} is an apocalyptic number.

It is an amenable number.

12121112100201 is a deficient number, since it is larger than the sum of its proper divisors (5569393468311).

12121112100201 is a wasteful number, since it uses less digits than its factorization.

12121112100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146753.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12121112100201 its reverse (10200121112121), we get a palindrome (22321233212322).

The spelling of 12121112100201 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, one hundred thousand, two hundred one".