11130021321 has 4 divisors (see below), whose sum is σ = 14840028432. Its totient is φ = 7420014212.

The previous prime is 11130021317. The next prime is 11130021323. The reversal of 11130021321 is 12312003111.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11130021321 - 2² = 11130021317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11130021321.

It is not an unprimeable number, because it can be changed into a prime (11130021323) 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, 1855003551 + ... + 1855003556.

It is an arithmetic number, because the mean of its divisors is an integer number (3710007108).

Almost surely, 2^11130021321 is an apocalyptic number.

It is an amenable number.

11130021321 is a deficient number, since it is larger than the sum of its proper divisors (3710007111).

11130021321 is an equidigital number, since it uses as much as digits as its factorization.

11130021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710007110.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11130021321 its reverse (12312003111), we get a palindrome (23442024432).

The spelling of 11130021321 in words is "eleven billion, one hundred thirty million, twenty-one thousand, three hundred twenty-one".