11121010313221 has 8 divisors (see below), whose sum is σ = 11785090829400. Its totient is φ = 10475636290560.

The previous prime is 11121010313207. The next prime is 11121010313249. The reversal of 11121010313221 is 12231301012111.

It can be written as a sum of positive squares in 4 ways, for example, as 1704366804196 + 9416643509025 = 1305514^2 + 3068655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11121010313221 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 (11121010313821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676622156 + ... + 4676624533.

It is an arithmetic number, because the mean of its divisors is an integer number (1473136353675).

Almost surely, 2^{11121010313221} is an apocalyptic number.

It is an amenable number.

11121010313221 is a deficient number, since it is larger than the sum of its proper divisors (664080516179).

11121010313221 is an equidigital number, since it uses as much as digits as its factorization.

11121010313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9353246759.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11121010313221 its reverse (12231301012111), we get a palindrome (23352311325332).

The spelling of 11121010313221 in words is "eleven trillion, one hundred twenty-one billion, ten million, three hundred thirteen thousand, two hundred twenty-one".