11221521343 has 4 divisors (see below), whose sum is σ = 11411716680. Its totient is φ = 11031326008.

The previous prime is 11221521341. The next prime is 11221521349. The reversal of 11221521343 is 34312512211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221521343 - 2¹ = 11221521341 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 (11221521341) 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, 95097580 + ... + 95097697.

It is an arithmetic number, because the mean of its divisors is an integer number (2852929170).

Almost surely, 2^11221521343 is an apocalyptic number.

11221521343 is a deficient number, since it is larger than the sum of its proper divisors (190195337).

11221521343 is an equidigital number, since it uses as much as digits as its factorization.

11221521343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190195336.

The product of its digits is 1440, while the sum is 25.

The spelling of 11221521343 in words is "eleven billion, two hundred twenty-one million, five hundred twenty-one thousand, three hundred forty-three".