11013013221 has 32 divisors (see below), whose sum is σ = 17332224000. Its totient is φ = 6086931840.

The previous prime is 11013013213. The next prime is 11013013247. The reversal of 11013013221 is 12231031011.

It is a happy number.

It is not a de Polignac number, because 11013013221 - 2³ = 11013013213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11013013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013013021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1773480 + ... + 1779678.

It is an arithmetic number, because the mean of its divisors is an integer number (541632000).

Almost surely, 2^11013013221 is an apocalyptic number.

It is an amenable number.

11013013221 is a deficient number, since it is larger than the sum of its proper divisors (6319210779).

11013013221 is a wasteful number, since it uses less digits than its factorization.

11013013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8969.

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

Adding to 11013013221 its reverse (12231031011), we get a palindrome (23244044232).

The spelling of 11013013221 in words is "eleven billion, thirteen million, thirteen thousand, two hundred twenty-one".