3551450221001 has 4 divisors (see below), whose sum is σ = 3551454262212. Its totient is φ = 3551446179792.

The previous prime is 3551450220917. The next prime is 3551450221009. The reversal of 3551450221001 is 1001220541553.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 278694247225 + 3272755973776 = 527915^2 + 1809076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3551450221001 is a prime.

It is a super-2 number, since 2×3551450221001² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83150 + ... + 2666423.

It is an arithmetic number, because the mean of its divisors is an integer number (887863565553).

Almost surely, 2^{3551450221001} is an apocalyptic number.

It is an amenable number.

3551450221001 is a deficient number, since it is larger than the sum of its proper divisors (4041211).

3551450221001 is a wasteful number, since it uses less digits than its factorization.

3551450221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041210.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 3551450221001 its reverse (1001220541553), we get a palindrome (4552670762554).

The spelling of 3551450221001 in words is "three trillion, five hundred fifty-one billion, four hundred fifty million, two hundred twenty-one thousand, one".