4221420018673 has 16 divisors (see below), whose sum is σ = 5005780347456. Its totient is φ = 3509343339840.

The previous prime is 4221420018617. The next prime is 4221420018691. The reversal of 4221420018673 is 3768100241224.

It is not a de Polignac number, because 4221420018673 - 2²¹ = 4221417921521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221420019673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137930586 + ... + 137961187.

It is an arithmetic number, because the mean of its divisors is an integer number (312861271716).

Almost surely, 2^{4221420018673} is an apocalyptic number.

It is an amenable number.

4221420018673 is a deficient number, since it is larger than the sum of its proper divisors (784360328783).

4221420018673 is a wasteful number, since it uses less digits than its factorization.

4221420018673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275891904.

The product of its (nonzero) digits is 129024, while the sum is 40.

Adding to 4221420018673 its reverse (3768100241224), we get a palindrome (7989520259897).

The spelling of 4221420018673 in words is "four trillion, two hundred twenty-one billion, four hundred twenty million, eighteen thousand, six hundred seventy-three".