321112521450040 has 32 divisors (see below), whose sum is σ = 722506693232880. Its totient is φ = 128444382807552.

The previous prime is 321112521449959. The next prime is 321112521450041. The reversal of 321112521450040 is 40054125211123.

It is a super-2 number, since 2×321112521450040² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321112521449984 and 321112521450011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321112521450041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11198337 + ... + 27706096.

Almost surely, 2^{321112521450040} is an apocalyptic number.

It is an amenable number.

321112521450040 is an abundant number, since it is smaller than the sum of its proper divisors (401394171782840).

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

321112521450040 is a wasteful number, since it uses less digits than its factorization.

321112521450040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39110791 (or 39110787 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 321112521450040 its reverse (40054125211123), we get a palindrome (361166646661163).

The spelling of 321112521450040 in words is "three hundred twenty-one trillion, one hundred twelve billion, five hundred twenty-one million, four hundred fifty thousand, forty".