1721221852482 has 96 divisors (see below), whose sum is σ = 4171994963136. Its totient is φ = 508346294400.

The previous prime is 1721221852463. The next prime is 1721221852487. The reversal of 1721221852482 is 2842581221271.

1721221852482 is a `hidden beast` number, since 1 + 7 + 21 + 2 + 21 + 8 + 524 + 82 = 666.

It is not an unprimeable number, because it can be changed into a prime (1721221852487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3705688 + ... + 4144220.

It is an arithmetic number, because the mean of its divisors is an integer number (43458280866).

Almost surely, 2^{1721221852482} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1721221852482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085997481568).

1721221852482 is an abundant number, since it is smaller than the sum of its proper divisors (2450773110654).

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

1721221852482 is a wasteful number, since it uses less digits than its factorization.

1721221852482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439056 (or 439053 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The spelling of 1721221852482 in words is "one trillion, seven hundred twenty-one billion, two hundred twenty-one million, eight hundred fifty-two thousand, four hundred eighty-two".