12011201212101 has 48 divisors (see below), whose sum is σ = 20215816302528. Its totient is φ = 6287215334400.

The previous prime is 12011201212061. The next prime is 12011201212117. The reversal of 12011201212101 is 10121210211021.

It is a happy number.

It is not a de Polignac number, because 12011201212101 - 2¹⁹ = 12011200687813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201212601) 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 47 ways as a sum of consecutive naturals, for example, 23739340 + ... + 24240021.

It is an arithmetic number, because the mean of its divisors is an integer number (421162839636).

Almost surely, 2^{12011201212101} is an apocalyptic number.

It is an amenable number.

12011201212101 is a deficient number, since it is larger than the sum of its proper divisors (8204615090427).

12011201212101 is a wasteful number, since it uses less digits than its factorization.

12011201212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47979522 (or 47979515 counting only the distinct ones).

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

Adding to 12011201212101 its reverse (10121210211021), we get a palindrome (22132411423122).

The spelling of 12011201212101 in words is "twelve trillion, eleven billion, two hundred one million, two hundred twelve thousand, one hundred one".