11102120213 has 4 divisors (see below), whose sum is σ = 11107599360. Its totient is φ = 11096641068.

The previous prime is 11102120207. The next prime is 11102120243. The reversal of 11102120213 is 31202120111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31202120111 = 3221 ⋅9687091.

It is a cyclic number.

It is not a de Polignac number, because 11102120213 - 2²⁰ = 11101071637 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 (11102120203) 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, 2736533 + ... + 2740586.

It is an arithmetic number, because the mean of its divisors is an integer number (2776899840).

Almost surely, 2^11102120213 is an apocalyptic number.

It is an amenable number.

11102120213 is a deficient number, since it is larger than the sum of its proper divisors (5479147).

11102120213 is an equidigital number, since it uses as much as digits as its factorization.

11102120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479146.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11102120213 its reverse (31202120111), we get a palindrome (42304240324).

The spelling of 11102120213 in words is "eleven billion, one hundred two million, one hundred twenty thousand, two hundred thirteen".