11284291213 has 4 divisors (see below), whose sum is σ = 12152313628. Its totient is φ = 10416268800.

The previous prime is 11284291171. The next prime is 11284291231. The reversal of 11284291213 is 31219248211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31219248211 = 9403 ⋅3320137.

It can be written as a sum of positive squares in 2 ways, for example, as 2254160484 + 9030130729 = 47478^2 + 95027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11284291213 is a prime.

It is a super-2 number, since 2×11284291213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11284291313) 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, 434011188 + ... + 434011213.

It is an arithmetic number, because the mean of its divisors is an integer number (3038078407).

Almost surely, 2^11284291213 is an apocalyptic number.

11284291213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11284291213 is a deficient number, since it is larger than the sum of its proper divisors (868022415).

11284291213 is an equidigital number, since it uses as much as digits as its factorization.

11284291213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868022414.

The product of its digits is 6912, while the sum is 34.

The spelling of 11284291213 in words is "eleven billion, two hundred eighty-four million, two hundred ninety-one thousand, two hundred thirteen".