4021321034434 has 16 divisors (see below), whose sum is σ = 6758190634176. Its totient is φ = 1778471218800.

The previous prime is 4021321034429. The next prime is 4021321034453. The reversal of 4021321034434 is 4344301231204.

It is a junction number, because it is equal to n+sod(n) for n = 4021321034396 and 4021321034405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2470098102 + ... + 2470099729.

It is an arithmetic number, because the mean of its divisors is an integer number (422386914636).

Almost surely, 2^{4021321034434} is an apocalyptic number.

4021321034434 is a deficient number, since it is larger than the sum of its proper divisors (2736869599742).

4021321034434 is a wasteful number, since it uses less digits than its factorization.

4021321034434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940197881.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 4021321034434 its reverse (4344301231204), we get a palindrome (8365622265638).

The spelling of 4021321034434 in words is "four trillion, twenty-one billion, three hundred twenty-one million, thirty-four thousand, four hundred thirty-four".