12011212100101 has 4 divisors (see below), whose sum is σ = 12011272650604. Its totient is φ = 12011151549600.

The previous prime is 12011212100059. The next prime is 12011212100143. The reversal of 12011212100101 is 10100121211021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12011212100059) and next prime (12011212100143).

It can be written as a sum of positive squares in 2 ways, for example, as 3912776749476 + 8098435350625 = 1978074^2 + 2845775^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011212100101 - 2³¹ = 12009064616453 is a prime.

It is a super-2 number, since 2×12011212100101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011212100501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29976720 + ... + 30374761.

It is an arithmetic number, because the mean of its divisors is an integer number (3002818162651).

Almost surely, 2^{12011212100101} is an apocalyptic number.

It is an amenable number.

12011212100101 is a deficient number, since it is larger than the sum of its proper divisors (60550503).

12011212100101 is an equidigital number, since it uses as much as digits as its factorization.

12011212100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60550502.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12011212100101 its reverse (10100121211021), we get a palindrome (22111333311122).

The spelling of 12011212100101 in words is "twelve trillion, eleven billion, two hundred twelve million, one hundred thousand, one hundred one".