12020101213 has 4 divisors (see below), whose sum is σ = 12155158620. Its totient is φ = 11885043808.

The previous prime is 12020101199. The next prime is 12020101229. The reversal of 12020101213 is 31210102021.

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 2432166489 + 9587934724 = 49317^2 + 97918^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020101213 - 2²⁹ = 11483230301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020101193 and 12020101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020101283) 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, 67528570 + ... + 67528747.

It is an arithmetic number, because the mean of its divisors is an integer number (3038789655).

Almost surely, 2^12020101213 is an apocalyptic number.

It is an amenable number.

12020101213 is a deficient number, since it is larger than the sum of its proper divisors (135057407).

12020101213 is an equidigital number, since it uses as much as digits as its factorization.

12020101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135057406.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12020101213 its reverse (31210102021), we get a palindrome (43230203234).

The spelling of 12020101213 in words is "twelve billion, twenty million, one hundred one thousand, two hundred thirteen".