11221656984 has 48 divisors (see below), whose sum is σ = 30907117800. Its totient is φ = 3677151744.

The previous prime is 11221656947. The next prime is 11221657009. The reversal of 11221656984 is 48965612211.

11221656984 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 1 + 6 + 569 + 84 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1316569 + ... + 1325064.

Almost surely, 2^11221656984 is an apocalyptic number.

It is an amenable number.

11221656984 is an abundant number, since it is smaller than the sum of its proper divisors (19685460816).

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

11221656984 is a wasteful number, since it uses less digits than its factorization.

11221656984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641704 (or 2641697 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 11221656984 in words is "eleven billion, two hundred twenty-one million, six hundred fifty-six thousand, nine hundred eighty-four".