12221041040 has 80 divisors (see below), whose sum is σ = 31177098288. Its totient is φ = 4427225088.

The previous prime is 12221041013. The next prime is 12221041043. The reversal of 12221041040 is 4014012221.

It can be written as a sum of positive squares in 8 ways, for example, as 89340304 + 12131700736 = 9452^2 + 110144^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (12221041043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55739 + ... + 165978.

Almost surely, 2^12221041040 is an apocalyptic number.

12221041040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221041040 is an abundant number, since it is smaller than the sum of its proper divisors (18956057248).

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

12221041040 is a wasteful number, since it uses less digits than its factorization.

12221041040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221796 (or 221790 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221041040 its reverse (4014012221), we get a palindrome (16235053261).

The spelling of 12221041040 in words is "twelve billion, two hundred twenty-one million, forty-one thousand, forty".