321140111420 has 96 divisors (see below), whose sum is σ = 708521748480. Its totient is φ = 122034598400.

The previous prime is 321140111417. The next prime is 321140111429. The reversal of 321140111420 is 24111041123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 321140111392 and 321140111401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321140111429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44904845 + ... + 44911995.

It is an arithmetic number, because the mean of its divisors is an integer number (7380434880).

Almost surely, 2^321140111420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321140111420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354260874240).

321140111420 is an abundant number, since it is smaller than the sum of its proper divisors (387381637060).

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

321140111420 is a wasteful number, since it uses less digits than its factorization.

321140111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835 (or 7833 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 321140111420 its reverse (24111041123), we get a palindrome (345251152543).

The spelling of 321140111420 in words is "three hundred twenty-one billion, one hundred forty million, one hundred eleven thousand, four hundred twenty".