421211034244 has 384 divisors, whose sum is σ = 1060770816000. Its totient is φ = 143943528960.

The previous prime is 421211034229. The next prime is 421211034247. The reversal of 421211034244 is 442430112124.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (421211034247) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1213864479 + ... + 1213864825.

It is an arithmetic number, because the mean of its divisors is an integer number (2762424000).

Almost surely, 2^421211034244 is an apocalyptic number.

421211034244 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421211034244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530385408000).

421211034244 is an abundant number, since it is smaller than the sum of its proper divisors (639559781756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421211034244 is a wasteful number, since it uses less digits than its factorization.

421211034244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 421211034244 its reverse (442430112124), we get a palindrome (863641146368).

The spelling of 421211034244 in words is "four hundred twenty-one billion, two hundred eleven million, thirty-four thousand, two hundred forty-four".