20112403434442 has 16 divisors (see below), whose sum is σ = 33183199059264. Its totient is φ = 9142001559900.

The previous prime is 20112403434421. The next prime is 20112403434517. The reversal of 20112403434442 is 24443430421102.

It is a junction number, because it is equal to n+sod(n) for n = 20112403434398 and 20112403434407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3777683934 + ... + 3777689257.

It is an arithmetic number, because the mean of its divisors is an integer number (2073949941204).

Almost surely, 2^{20112403434442} is an apocalyptic number.

20112403434442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20112403434442 is a deficient number, since it is larger than the sum of its proper divisors (13070795624822).

20112403434442 is an equidigital number, since it uses as much as digits as its factorization.

20112403434442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555373226 (or 7555373204 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 20112403434442 its reverse (24443430421102), we get a palindrome (44555833855544).

The spelling of 20112403434442 in words is "twenty trillion, one hundred twelve billion, four hundred three million, four hundred thirty-four thousand, four hundred forty-two".