12201211213 has 4 divisors (see below), whose sum is σ = 12240954880. Its totient is φ = 12161467548.

The previous prime is 12201211199. The next prime is 12201211237. The reversal of 12201211213 is 31211210221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31211210221 = 30341 ⋅1028681.

It is a cyclic number.

It is not a de Polignac number, because 12201211213 - 2¹⁷ = 12201080141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201211283) 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, 19871373 + ... + 19871986.

It is an arithmetic number, because the mean of its divisors is an integer number (3060238720).

Almost surely, 2^12201211213 is an apocalyptic number.

It is an amenable number.

12201211213 is a deficient number, since it is larger than the sum of its proper divisors (39743667).

12201211213 is an equidigital number, since it uses as much as digits as its factorization.

12201211213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39743666.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12201211213 its reverse (31211210221), we get a palindrome (43412421434).

It can be divided in two parts, 122012 and 11213, that added together give a square (133225 = 365²).

The spelling of 12201211213 in words is "twelve billion, two hundred one million, two hundred eleven thousand, two hundred thirteen".