12221000050 has 48 divisors (see below), whose sum is σ = 26005514112. Its totient is φ = 4185676800.

The previous prime is 12221000041. The next prime is 12221000053. The reversal of 12221000050 is 5000012221.

It is not an unprimeable number, because it can be changed into a prime (12221000053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326290 + ... + 361810.

It is an arithmetic number, because the mean of its divisors is an integer number (541781544).

Almost surely, 2^12221000050 is an apocalyptic number.

12221000050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221000050 is an abundant number, since it is smaller than the sum of its proper divisors (13784514062).

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

12221000050 is a wasteful number, since it uses less digits than its factorization.

12221000050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36523 (or 36518 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

Adding to 12221000050 its reverse (5000012221), we get a palindrome (17221012271).

The spelling of 12221000050 in words is "twelve billion, two hundred twenty-one million, fifty", and thus it is an aban number.