11220256476 has 72 divisors (see below), whose sum is σ = 33320776944. Its totient is φ = 3138531840.

The previous prime is 11220256429. The next prime is 11220256493. The reversal of 11220256476 is 67465202211.

It is a happy number.

11220256476 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 0 + 2 + 5 + 647 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11220256476.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1084621 + ... + 1094916.

Almost surely, 2^11220256476 is an apocalyptic number.

It is an amenable number.

11220256476 is an abundant number, since it is smaller than the sum of its proper divisors (22100520468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11220256476 is a wasteful number, since it uses less digits than its factorization.

11220256476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179571 (or 2179566 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 11220256476 its reverse (67465202211), we get a palindrome (78685458687).

The spelling of 11220256476 in words is "eleven billion, two hundred twenty million, two hundred fifty-six thousand, four hundred seventy-six".