355555413222101 has 2 divisors, whose sum is σ = 355555413222102. Its totient is φ = 355555413222100.

The previous prime is 355555413222041. The next prime is 355555413222103. The reversal of 355555413222101 is 101222314555553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227815100667025 + 127740312555076 = 15093545^2 + 11302226^2 .

It is a cyclic number.

It is not a de Polignac number, because 355555413222101 - 2¹⁰ = 355555413221077 is a prime.

It is a super-2 number, since 2×355555413222101² (a number of 30 digits) contains 22 as substring.

Together with 355555413222103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355555413222103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177777706611050 + 177777706611051.

It is an arithmetic number, because the mean of its divisors is an integer number (177777706611051).

Almost surely, 2^{355555413222101} is an apocalyptic number.

It is an amenable number.

355555413222101 is a deficient number, since it is larger than the sum of its proper divisors (1).

355555413222101 is an equidigital number, since it uses as much as digits as its factorization.

355555413222101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900000, while the sum is 44.

Adding to 355555413222101 its reverse (101222314555553), we get a palindrome (456777727777654).

The spelling of 355555413222101 in words is "three hundred fifty-five trillion, five hundred fifty-five billion, four hundred thirteen million, two hundred twenty-two thousand, one hundred one".