321044121042420 has 96 divisors (see below), whose sum is σ = 914258999808000. Its totient is φ = 84151561302144.

The previous prime is 321044121042409. The next prime is 321044121042433. The reversal of 321044121042420 is 24240121440123.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27635097 + ... + 37493823.

It is an arithmetic number, because the mean of its divisors is an integer number (9523531248000).

Almost surely, 2^{321044121042420} is an apocalyptic number.

321044121042420 is a gapful number since it is divisible by the number (30) 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 321044121042420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457129499904000).

321044121042420 is an abundant number, since it is smaller than the sum of its proper divisors (593214878765580).

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

321044121042420 is a wasteful number, since it uses less digits than its factorization.

321044121042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9867997 (or 9867995 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 321044121042420 its reverse (24240121440123), we get a palindrome (345284242482543).

The spelling of 321044121042420 in words is "three hundred twenty-one trillion, forty-four billion, one hundred twenty-one million, forty-two thousand, four hundred twenty".