321224230320040 has 64 divisors (see below), whose sum is σ = 757183323980160. Its totient is φ = 122413529568000.

The previous prime is 321224230320011. The next prime is 321224230320041. The reversal of 321224230320040 is 40023032422123.

It is a super-2 number, since 2×321224230320040² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321224230319990 and 321224230320008.

It is not an unprimeable number, because it can be changed into a prime (321224230320041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695300499 + ... + 695762338.

It is an arithmetic number, because the mean of its divisors is an integer number (11830989437190).

Almost surely, 2^{321224230320040} is an apocalyptic number.

It is an amenable number.

321224230320040 is an abundant number, since it is smaller than the sum of its proper divisors (435959093660120).

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

321224230320040 is a wasteful number, since it uses less digits than its factorization.

321224230320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391063122 (or 1391063118 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 321224230320040 its reverse (40023032422123), we get a palindrome (361247262742163).

The spelling of 321224230320040 in words is "three hundred twenty-one trillion, two hundred twenty-four billion, two hundred thirty million, three hundred twenty thousand, forty".