11205161213 has 4 divisors (see below), whose sum is σ = 11794906560. Its totient is φ = 10615415868.

The previous prime is 11205161197. The next prime is 11205161221. The reversal of 11205161213 is 31216150211.

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.

It is a cyclic number.

It is not a de Polignac number, because 11205161213 - 2⁴ = 11205161197 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 (11205161273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294872645 + ... + 294872682.

It is an arithmetic number, because the mean of its divisors is an integer number (2948726640).

Almost surely, 2^11205161213 is an apocalyptic number.

It is an amenable number.

11205161213 is a deficient number, since it is larger than the sum of its proper divisors (589745347).

11205161213 is an equidigital number, since it uses as much as digits as its factorization.

11205161213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589745346.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 11205161213 in words is "eleven billion, two hundred five million, one hundred sixty-one thousand, two hundred thirteen".