34411211221 has 2 divisors, whose sum is σ = 34411211222. Its totient is φ = 34411211220.

The previous prime is 34411211171. The next prime is 34411211243. The reversal of 34411211221 is 12211211443.

It is an a-pointer prime, because the next prime (34411211243) can be obtained adding 34411211221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33557110596 + 854100625 = 183186^2 + 29225^2 .

It is a cyclic number.

It is not a de Polignac number, because 34411211221 - 2¹⁵ = 34411178453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34411211192 and 34411211201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34411211321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17205605610 + 17205605611.

It is an arithmetic number, because the mean of its divisors is an integer number (17205605611).

Almost surely, 2^34411211221 is an apocalyptic number.

It is an amenable number.

34411211221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34411211221 is an equidigital number, since it uses as much as digits as its factorization.

34411211221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

Adding to 34411211221 its reverse (12211211443), we get a palindrome (46622422664).

The spelling of 34411211221 in words is "thirty-four billion, four hundred eleven million, two hundred eleven thousand, two hundred twenty-one".