11102123213 has 4 divisors (see below), whose sum is σ = 11372906748. Its totient is φ = 10831339680.

The previous prime is 11102123191. The next prime is 11102123231. The reversal of 11102123213 is 31232120111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3512577289 + 7589545924 = 59267^2 + 87118^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102123213 - 2¹⁰ = 11102122189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102123191 and 11102123200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102123413) 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, 135391706 + ... + 135391787.

It is an arithmetic number, because the mean of its divisors is an integer number (2843226687).

Almost surely, 2^11102123213 is an apocalyptic number.

It is an amenable number.

11102123213 is a deficient number, since it is larger than the sum of its proper divisors (270783535).

11102123213 is an equidigital number, since it uses as much as digits as its factorization.

11102123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270783534.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11102123213 its reverse (31232120111), we get a palindrome (42334243324).

The spelling of 11102123213 in words is "eleven billion, one hundred two million, one hundred twenty-three thousand, two hundred thirteen".