3201451212520 has 128 divisors (see below), whose sum is σ = 8333221628160. Its totient is φ = 1093988700160.

The previous prime is 3201451212511. The next prime is 3201451212577. The reversal of 3201451212520 is 252121541023.

It is a happy number.

It is a super-2 number, since 2×3201451212520² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4508802 + ... + 5170318.

It is an arithmetic number, because the mean of its divisors is an integer number (65103293970).

Almost surely, 2^{3201451212520} 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 3201451212520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4166610814080).

3201451212520 is an abundant number, since it is smaller than the sum of its proper divisors (5131770415640).

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

3201451212520 is a wasteful number, since it uses less digits than its factorization.

3201451212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662203 (or 662199 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 3201451212520 its reverse (252121541023), we get a palindrome (3453572753543).

The spelling of 3201451212520 in words is "three trillion, two hundred one billion, four hundred fifty-one million, two hundred twelve thousand, five hundred twenty".