12111010102201 has 4 divisors (see below), whose sum is σ = 12823422461172. Its totient is φ = 11398597743232.

The previous prime is 12111010102189. The next prime is 12111010102229. The reversal of 12111010102201 is 10220101011121.

It is a happy number.

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 7677138685225 + 4433871416976 = 2770765^2 + 2105676^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111010102201 - 2¹¹ = 12111010100153 is a prime.

It is a super-2 number, since 2×12111010102201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111010102291) 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 3 ways as a sum of consecutive naturals, for example, 356206179460 + ... + 356206179493.

It is an arithmetic number, because the mean of its divisors is an integer number (3205855615293).

Almost surely, 2^{12111010102201} is an apocalyptic number.

It is an amenable number.

12111010102201 is a deficient number, since it is larger than the sum of its proper divisors (712412358971).

12111010102201 is an equidigital number, since it uses as much as digits as its factorization.

12111010102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712412358970.

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

Adding to 12111010102201 its reverse (10220101011121), we get a palindrome (22331111113322).

The spelling of 12111010102201 in words is "twelve trillion, one hundred eleven billion, ten million, one hundred two thousand, two hundred one".