12102020201 has 4 divisors (see below), whose sum is σ = 12105532500. Its totient is φ = 12098507904.

The previous prime is 12102020149. The next prime is 12102020221. The reversal of 12102020201 is 10202020121.

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 2919781225 + 9182238976 = 54035^2 + 95824^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102020201 - 2³⁰ = 11028278377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102020221) 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, 1750976 + ... + 1757873.

It is an arithmetic number, because the mean of its divisors is an integer number (3026383125).

Almost surely, 2^12102020201 is an apocalyptic number.

It is an amenable number.

12102020201 is a deficient number, since it is larger than the sum of its proper divisors (3512299).

12102020201 is an equidigital number, since it uses as much as digits as its factorization.

12102020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512298.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12102020201 its reverse (10202020121), we get a palindrome (22304040322).

The spelling of 12102020201 in words is "twelve billion, one hundred two million, twenty thousand, two hundred one".