11213026687 has 4 divisors (see below), whose sum is σ = 11213303040. Its totient is φ = 11212750336.

The previous prime is 11213026633. The next prime is 11213026703. The reversal of 11213026687 is 78662031211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78662031211 = 199 ⋅395286589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11213026687 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 (11213026387) 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, 64063 + ... + 162880.

It is an arithmetic number, because the mean of its divisors is an integer number (2803325760).

Almost surely, 2^11213026687 is an apocalyptic number.

11213026687 is a deficient number, since it is larger than the sum of its proper divisors (276353).

11213026687 is an equidigital number, since it uses as much as digits as its factorization.

11213026687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276352.

The product of its (nonzero) digits is 24192, while the sum is 37.

Adding to 11213026687 its reverse (78662031211), we get a palindrome (89875057898).

The spelling of 11213026687 in words is "eleven billion, two hundred thirteen million, twenty-six thousand, six hundred eighty-seven".