11043651102221 has 8 divisors (see below), whose sum is σ = 11426846403000. Its totient is φ = 10660614451200.

The previous prime is 11043651102173. The next prime is 11043651102227. The reversal of 11043651102221 is 12220115634011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4099693552900 + 6943957549321 = 2024770^2 + 2635139^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11043651102221 is a prime.

It is a super-3 number, since 3×11043651102221³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11043651102227) 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, 39520796 + ... + 39799253.

It is an arithmetic number, because the mean of its divisors is an integer number (1428355800375).

Almost surely, 2^{11043651102221} is an apocalyptic number.

It is an amenable number.

11043651102221 is a deficient number, since it is larger than the sum of its proper divisors (383195300779).

11043651102221 is an equidigital number, since it uses as much as digits as its factorization.

11043651102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79324879.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 11043651102221 its reverse (12220115634011), we get a palindrome (23263766736232).

The spelling of 11043651102221 in words is "eleven trillion, forty-three billion, six hundred fifty-one million, one hundred two thousand, two hundred twenty-one".