11221582636 has 24 divisors (see below), whose sum is σ = 21742773696. Its totient is φ = 5024587920.

The previous prime is 11221582627. The next prime is 11221582637. The reversal of 11221582636 is 63628512211.

It is a junction number, because it is equal to n+sod(n) for n = 11221582595 and 11221582604.

It is not an unprimeable number, because it can be changed into a prime (11221582637) 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, 1900306 + ... + 1906201.

It is an arithmetic number, because the mean of its divisors is an integer number (905948904).

Almost surely, 2^11221582636 is an apocalyptic number.

It is an amenable number.

11221582636 is a deficient number, since it is larger than the sum of its proper divisors (10521191060).

11221582636 is a wasteful number, since it uses less digits than its factorization.

11221582636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806589 (or 3806587 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The spelling of 11221582636 in words is "eleven billion, two hundred twenty-one million, five hundred eighty-two thousand, six hundred thirty-six".