11243452205 has 4 divisors (see below), whose sum is σ = 13492142652. Its totient is φ = 8994761760.

The previous prime is 11243452183. The next prime is 11243452223. The reversal of 11243452205 is 50225434211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50225434211 = 16661 ⋅3014551.

It can be written as a sum of positive squares in 2 ways, for example, as 3997527076 + 7245925129 = 63226^2 + 85123^2 .

It is not a de Polignac number, because 11243452205 - 2²⁸ = 10975016749 is a prime.

It is a super-2 number, since 2×11243452205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1124345216 + ... + 1124345225.

It is an arithmetic number, because the mean of its divisors is an integer number (3373035663).

Almost surely, 2^11243452205 is an apocalyptic number.

It is an amenable number.

11243452205 is a deficient number, since it is larger than the sum of its proper divisors (2248690447).

11243452205 is an equidigital number, since it uses as much as digits as its factorization.

11243452205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248690446.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 11243452205 its reverse (50225434211), we get a palindrome (61468886416).

The spelling of 11243452205 in words is "eleven billion, two hundred forty-three million, four hundred fifty-two thousand, two hundred five".