11221226369 has 4 divisors (see below), whose sum is σ = 11222200644. Its totient is φ = 11220252096.

The previous prime is 11221226347. The next prime is 11221226371. The reversal of 11221226369 is 96362212211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96362212211 = 173 ⋅557007007.

It can be written as a sum of positive squares in 2 ways, for example, as 10314433600 + 906792769 = 101560^2 + 30113^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221226369 - 2⁸ = 11221226113 is a prime.

It is a super-2 number, since 2×11221226369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221226399) 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, 469652 + ... + 492965.

It is an arithmetic number, because the mean of its divisors is an integer number (2805550161).

Almost surely, 2^11221226369 is an apocalyptic number.

It is an amenable number.

11221226369 is a deficient number, since it is larger than the sum of its proper divisors (974275).

11221226369 is an equidigital number, since it uses as much as digits as its factorization.

11221226369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974274.

The product of its digits is 15552, while the sum is 35.

The spelling of 11221226369 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-six thousand, three hundred sixty-nine".