12221000040 has 32 divisors (see below), whose sum is σ = 36663000480. Its totient is φ = 3258933312.

The previous prime is 12221000039. The next prime is 12221000041. The reversal of 12221000040 is 4000012221.

12221000040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12221000039) and next prime (12221000041).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12221000041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50920714 + ... + 50920953.

It is an arithmetic number, because the mean of its divisors is an integer number (1145718765).

Almost surely, 2^12221000040 is an apocalyptic number.

12221000040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221000040 is an abundant number, since it is smaller than the sum of its proper divisors (24442000440).

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

12221000040 is a wasteful number, since it uses less digits than its factorization.

12221000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101841681 (or 101841677 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12221000040 its reverse (4000012221), we get a palindrome (16221012261).

The spelling of 12221000040 in words is "twelve billion, two hundred twenty-one million, forty", and thus it is an aban number.