354020000221 has 4 divisors (see below), whose sum is σ = 359823606844. Its totient is φ = 348216393600.

The previous prime is 354020000219. The next prime is 354020000227. The reversal of 354020000221 is 122000020453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122000020453 = 29 ⋅4206897257.

It can be written as a sum of positive squares in 2 ways, for example, as 54936796996 + 299083203225 = 234386^2 + 546885^2 .

It is a cyclic number.

It is not a de Polignac number, because 354020000221 - 2¹ = 354020000219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354020000227) 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, 2901803220 + ... + 2901803341.

It is an arithmetic number, because the mean of its divisors is an integer number (89955901711).

Almost surely, 2^354020000221 is an apocalyptic number.

It is an amenable number.

354020000221 is a deficient number, since it is larger than the sum of its proper divisors (5803606623).

354020000221 is an equidigital number, since it uses as much as digits as its factorization.

354020000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803606622.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 354020000221 its reverse (122000020453), we get a palindrome (476020020674).

The spelling of 354020000221 in words is "three hundred fifty-four billion, twenty million, two hundred twenty-one", and thus it is an aban number.