421321011144 has 32 divisors (see below), whose sum is σ = 1149057303840. Its totient is φ = 127673033600.

The previous prime is 421321011053. The next prime is 421321011169. The reversal of 421321011144 is 441110123124.

It is a happy number.

It is a super-2 number, since 2×421321011144² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797956197 + ... + 797956724.

It is an arithmetic number, because the mean of its divisors is an integer number (35908040745).

Almost surely, 2^421321011144 is an apocalyptic number.

421321011144 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421321011144 is an abundant number, since it is smaller than the sum of its proper divisors (727736292696).

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

421321011144 is a wasteful number, since it uses less digits than its factorization.

421321011144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595912941 (or 1595912937 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 421321011144 its reverse (441110123124), we get a palindrome (862431134268).

The spelling of 421321011144 in words is "four hundred twenty-one billion, three hundred twenty-one million, eleven thousand, one hundred forty-four".