421121413444 has 24 divisors (see below), whose sum is σ = 761922395136. Its totient is φ = 203450496000.

The previous prime is 421121413429. The next prime is 421121413511. The reversal of 421121413444 is 444314121124.

It is a super-2 number, since 2×421121413444² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 2569612 + ... + 2728579.

It is an arithmetic number, because the mean of its divisors is an integer number (31746766464).

Almost surely, 2^421121413444 is an apocalyptic number.

It is an amenable number.

421121413444 is a deficient number, since it is larger than the sum of its proper divisors (340800981692).

421121413444 is a wasteful number, since it uses less digits than its factorization.

421121413444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5298867 (or 5298865 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

Adding to 421121413444 its reverse (444314121124), we get a palindrome (865435534568).

The spelling of 421121413444 in words is "four hundred twenty-one billion, one hundred twenty-one million, four hundred thirteen thousand, four hundred forty-four".