11130021211 has 4 divisors (see below), whose sum is σ = 11152875952. Its totient is φ = 11107166472.

The previous prime is 11130021197. The next prime is 11130021223. The reversal of 11130021211 is 11212003111.

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: 11212003111 = 4297 ⋅2609263.

It is a cyclic number.

It is not a de Polignac number, because 11130021211 - 2⁵ = 11130021179 is a prime.

It is a super-3 number, since 3×11130021211³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11130021191 and 11130021200.

It is not an unprimeable number, because it can be changed into a prime (11130021611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11426640 + ... + 11427613.

It is an arithmetic number, because the mean of its divisors is an integer number (2788218988).

Almost surely, 2^11130021211 is an apocalyptic number.

11130021211 is a deficient number, since it is larger than the sum of its proper divisors (22854741).

11130021211 is an equidigital number, since it uses as much as digits as its factorization.

11130021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22854740.

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

Adding to 11130021211 its reverse (11212003111), we get a palindrome (22342024322).

The spelling of 11130021211 in words is "eleven billion, one hundred thirty million, twenty-one thousand, two hundred eleven".