20421644322112 has 28 divisors (see below), whose sum is σ = 44208218676096. Its totient is φ = 9282565600640.

The previous prime is 20421644322103. The next prime is 20421644322161. The reversal of 20421644322112 is 21122344612402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14504008048 + ... + 14504009455.

Almost surely, 2^{20421644322112} is an apocalyptic number.

20421644322112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20421644322112 is an abundant number, since it is smaller than the sum of its proper divisors (23786574353984).

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

20421644322112 is a wasteful number, since it uses less digits than its factorization.

20421644322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29008017526 (or 29008017516 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 20421644322112 its reverse (21122344612402), we get a palindrome (41543988934514).

The spelling of 20421644322112 in words is "twenty trillion, four hundred twenty-one billion, six hundred forty-four million, three hundred twenty-two thousand, one hundred twelve".