3521213040000 has 320 divisors, whose sum is σ = 12003702773040. Its totient is φ = 913609728000.

The previous prime is 3521213039999. The next prime is 3521213040043. The reversal of 3521213040000 is 403121253.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8681734 + ... + 9078266.

Almost surely, 2^{3521213040000} is an apocalyptic number.

3521213040000 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 3521213040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6001851386520).

3521213040000 is an abundant number, since it is smaller than the sum of its proper divisors (8482489733040).

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

3521213040000 is an equidigital number, since it uses as much as digits as its factorization.

3521213040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396607 (or 396580 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 3521213040000 its reverse (403121253), we get a palindrome (3521616161253).

The spelling of 3521213040000 in words is "three trillion, five hundred twenty-one billion, two hundred thirteen million, forty thousand".