134226312221 has 2 divisors, whose sum is σ = 134226312222. Its totient is φ = 134226312220.

The previous prime is 134226312173. The next prime is 134226312239. The reversal of 134226312221 is 122213622431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120329203225 + 13897108996 = 346885^2 + 117886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134226312221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134226342221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67113156110 + 67113156111.

It is an arithmetic number, because the mean of its divisors is an integer number (67113156111).

Almost surely, 2^134226312221 is an apocalyptic number.

It is an amenable number.

134226312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

134226312221 is an equidigital number, since it uses as much as digits as its factorization.

134226312221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

Adding to 134226312221 its reverse (122213622431), we get a palindrome (256439934652).

The spelling of 134226312221 in words is "one hundred thirty-four billion, two hundred twenty-six million, three hundred twelve thousand, two hundred twenty-one".