3551450221000 has 256 divisors, whose sum is σ = 9123030259200. Its totient is φ = 1283324032000.

The previous prime is 3551450220917. The next prime is 3551450221009. The reversal of 3551450221000 is 1220541553.

It is a super-2 number, since 2×3551450221000² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3551450221000.

It is not an unprimeable number, because it can be changed into a prime (3551450221009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1251831582 + ... + 1251834418.

It is an arithmetic number, because the mean of its divisors is an integer number (35636836950).

Almost surely, 2^{3551450221000} 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 3551450221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4561515129600).

3551450221000 is an abundant number, since it is smaller than the sum of its proper divisors (5571580038200).

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

3551450221000 is a wasteful number, since it uses less digits than its factorization.

3551450221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545 (or 3531 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 3551450221000 its reverse (1220541553), we get a palindrome (3552670762553).

The spelling of 3551450221000 in words is "three trillion, five hundred fifty-one billion, four hundred fifty million, two hundred twenty-one thousand".