11211102013 has 4 divisors (see below), whose sum is σ = 11870578620. Its totient is φ = 10551625408.

The previous prime is 11211102011. The next prime is 11211102017. The reversal of 11211102013 is 31020111211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31020111211 = 12547 ⋅2472313.

It can be written as a sum of positive squares in 2 ways, for example, as 4391315289 + 6819786724 = 66267^2 + 82582^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211102013 - 2¹ = 11211102011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211101984 and 11211102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211102011) 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, 329738278 + ... + 329738311.

It is an arithmetic number, because the mean of its divisors is an integer number (2967644655).

Almost surely, 2^11211102013 is an apocalyptic number.

It is an amenable number.

11211102013 is a deficient number, since it is larger than the sum of its proper divisors (659476607).

11211102013 is an equidigital number, since it uses as much as digits as its factorization.

11211102013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659476606.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11211102013 its reverse (31020111211), we get a palindrome (42231213224).

The spelling of 11211102013 in words is "eleven billion, two hundred eleven million, one hundred two thousand, thirteen".