12011212210001 has 4 divisors (see below), whose sum is σ = 12011399911092. Its totient is φ = 12011024508912.

The previous prime is 12011212209889. The next prime is 12011212210009. The reversal of 12011212210001 is 10001221211021.

12011212210001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10737025027600 + 1274187182401 = 3276740^2 + 1128799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011212210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011212210009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93754526 + ... + 93882551.

It is an arithmetic number, because the mean of its divisors is an integer number (3002849977773).

Almost surely, 2^{12011212210001} is an apocalyptic number.

It is an amenable number.

12011212210001 is a deficient number, since it is larger than the sum of its proper divisors (187701091).

12011212210001 is an equidigital number, since it uses as much as digits as its factorization.

12011212210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187701090.

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

Adding to 12011212210001 its reverse (10001221211021), we get a palindrome (22012433421022).

The spelling of 12011212210001 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred ten thousand, one".