11211241636 has 24 divisors (see below), whose sum is σ = 23145790976. Its totient is φ = 4649823360.

The previous prime is 11211241609. The next prime is 11211241637. The reversal of 11211241636 is 63614211211.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (11211241637) 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, 6457221 + ... + 6458956.

Almost surely, 2^11211241636 is an apocalyptic number.

It is an amenable number.

11211241636 is an abundant number, since it is smaller than the sum of its proper divisors (11934549340).

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

11211241636 is a wasteful number, since it uses less digits than its factorization.

11211241636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12916219 (or 12916217 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

Adding to 11211241636 its reverse (63614211211), we get a palindrome (74825452847).

The spelling of 11211241636 in words is "eleven billion, two hundred eleven million, two hundred forty-one thousand, six hundred thirty-six".