11221604253 has 6 divisors (see below), whose sum is σ = 16208983934. Its totient is φ = 7481069496.

The previous prime is 11221604243. The next prime is 11221604267. The reversal of 11221604253 is 35240612211.

11221604253 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 1 + 604 + 2 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10725294969 + 496309284 = 103563^2 + 22278^2 .

It is not a de Polignac number, because 11221604253 - 2⁵ = 11221604221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221604243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623422450 + ... + 623422467.

Almost surely, 2^11221604253 is an apocalyptic number.

It is an amenable number.

11221604253 is a deficient number, since it is larger than the sum of its proper divisors (4987379681).

11221604253 is a wasteful number, since it uses less digits than its factorization.

11221604253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246844923 (or 1246844920 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 11221604253 in words is "eleven billion, two hundred twenty-one million, six hundred four thousand, two hundred fifty-three".