1205511342213 has 8 divisors (see below), whose sum is σ = 1607884072576. Its totient is φ = 803406420000.

The previous prime is 1205511342187. The next prime is 1205511342257. The reversal of 1205511342213 is 3122431155021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1205511342213 - 2⁶ = 1205511342149 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 (1205511342613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66941533 + ... + 66959538.

It is an arithmetic number, because the mean of its divisors is an integer number (200985509072).

Almost surely, 2^{1205511342213} is an apocalyptic number.

It is an amenable number.

1205511342213 is a deficient number, since it is larger than the sum of its proper divisors (402372730363).

1205511342213 is a wasteful number, since it uses less digits than its factorization.

1205511342213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133904075.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1205511342213 its reverse (3122431155021), we get a palindrome (4327942497234).

The spelling of 1205511342213 in words is "one trillion, two hundred five billion, five hundred eleven million, three hundred forty-two thousand, two hundred thirteen".