12211541136 has 120 divisors (see below), whose sum is σ = 34753095104. Its totient is φ = 4001944320.

The previous prime is 12211541123. The next prime is 12211541143. The reversal of 12211541136 is 63114511221.

12211541136 is a `hidden beast` number, since 1 + 2 + 211 + 5 + 411 + 36 = 666.

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, 7013226 + ... + 7014966.

Almost surely, 2^12211541136 is an apocalyptic number.

12211541136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211541136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17376547552).

12211541136 is an abundant number, since it is smaller than the sum of its proper divisors (22541553968).

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

12211541136 is a wasteful number, since it uses less digits than its factorization.

12211541136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549 (or 2540 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The spelling of 12211541136 in words is "twelve billion, two hundred eleven million, five hundred forty-one thousand, one hundred thirty-six".