20043421244012 has 24 divisors (see below), whose sum is σ = 36041052284160. Its totient is φ = 9746234357760.

The previous prime is 20043421243927. The next prime is 20043421244017. The reversal of 20043421244012 is 21044212434002.

It is a happy number.

It is a super-2 number, since 2×20043421244012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20043421244017) 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, 31764437 + ... + 32389292.

It is an arithmetic number, because the mean of its divisors is an integer number (1501710511840).

Almost surely, 2^{20043421244012} is an apocalyptic number.

It is an amenable number.

20043421244012 is a deficient number, since it is larger than the sum of its proper divisors (15997631040148).

20043421244012 is a wasteful number, since it uses less digits than its factorization.

20043421244012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64155881 (or 64155879 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 20043421244012 its reverse (21044212434002), we get a palindrome (41087633678014).

The spelling of 20043421244012 in words is "twenty trillion, forty-three billion, four hundred twenty-one million, two hundred forty-four thousand, twelve".