420321213223444 has 12 divisors (see below), whose sum is σ = 792143824921204. Its totient is φ = 193994406103104.

The previous prime is 420321213223433. The next prime is 420321213223453. The reversal of 420321213223444 is 444322312123024.

It can be written as a sum of positive squares in 2 ways, for example, as 265460610733444 + 154860602490000 = 16292962^2 + 12444300^2 .

It is a super-2 number, since 2×420321213223444² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4041550127097 + ... + 4041550127200.

Almost surely, 2^{420321213223444} is an apocalyptic number.

It is an amenable number.

420321213223444 is a deficient number, since it is larger than the sum of its proper divisors (371822611697760).

420321213223444 is a wasteful number, since it uses less digits than its factorization.

420321213223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083100254314 (or 8083100254312 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 420321213223444 its reverse (444322312123024), we get a palindrome (864643525346468).

The spelling of 420321213223444 in words is "four hundred twenty trillion, three hundred twenty-one billion, two hundred thirteen million, two hundred twenty-three thousand, four hundred forty-four".