12101020201 has 4 divisors (see below), whose sum is σ = 12119328004. Its totient is φ = 12082712400.

The previous prime is 12101020157. The next prime is 12101020213. The reversal of 12101020201 is 10202010121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10202010121 = 53 ⋅192490757.

It can be written as a sum of positive squares in 2 ways, for example, as 5314555801 + 6786464400 = 72901^2 + 82380^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101020201 - 2¹³ = 12101012009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101020271) 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, 9152910 + ... + 9154231.

It is an arithmetic number, because the mean of its divisors is an integer number (3029832001).

Almost surely, 2^12101020201 is an apocalyptic number.

It is an amenable number.

12101020201 is a deficient number, since it is larger than the sum of its proper divisors (18307803).

12101020201 is an equidigital number, since it uses as much as digits as its factorization.

12101020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18307802.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12101020201 its reverse (10202010121), we get a palindrome (22303030322).

The spelling of 12101020201 in words is "twelve billion, one hundred one million, twenty thousand, two hundred one".