4021321040000 has 160 divisors (see below), whose sum is σ = 10920905004240. Its totient is φ = 1462298240000.

The previous prime is 4021321039987. The next prime is 4021321040003. The reversal of 4021321040000 is 401231204.

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (4021321040003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1404842 + ... + 3164841.

Almost surely, 2^{4021321040000} is an apocalyptic number.

4021321040000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4021321040000 is an abundant number, since it is smaller than the sum of its proper divisors (6899583964240).

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

4021321040000 is an equidigital number, since it uses as much as digits as its factorization.

4021321040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569728 (or 4569701 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 4021321040000 its reverse (401231204), we get a palindrome (4021722271204).

The spelling of 4021321040000 in words is "four trillion, twenty-one billion, three hundred twenty-one million, forty thousand".