354130410212221 has 2 divisors, whose sum is σ = 354130410212222. Its totient is φ = 354130410212220.

The previous prime is 354130410212141. The next prime is 354130410212237. The reversal of 354130410212221 is 122212014031453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207178167879225 + 146952242332996 = 14393685^2 + 12122386^2 .

It is an emirp because it is prime and its reverse (122212014031453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354130410212221 - 2¹⁵ = 354130410179453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354130419212221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177065205106110 + 177065205106111.

It is an arithmetic number, because the mean of its divisors is an integer number (177065205106111).

Almost surely, 2^{354130410212221} is an apocalyptic number.

It is an amenable number.

354130410212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

354130410212221 is an equidigital number, since it uses as much as digits as its factorization.

354130410212221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 354130410212221 its reverse (122212014031453), we get a palindrome (476342424243674).

The spelling of 354130410212221 in words is "three hundred fifty-four trillion, one hundred thirty billion, four hundred ten million, two hundred twelve thousand, two hundred twenty-one".