134281722221 has 2 divisors, whose sum is σ = 134281722222. Its totient is φ = 134281722220.

The previous prime is 134281722173. The next prime is 134281722233. The reversal of 134281722221 is 122227182431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71856699721 + 62425022500 = 268061^2 + 249850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134281722221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134281722241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67140861110 + 67140861111.

It is an arithmetic number, because the mean of its divisors is an integer number (67140861111).

Almost surely, 2^134281722221 is an apocalyptic number.

It is an amenable number.

134281722221 is a deficient number, since it is larger than the sum of its proper divisors (1).

134281722221 is an equidigital number, since it uses as much as digits as its factorization.

134281722221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The spelling of 134281722221 in words is "one hundred thirty-four billion, two hundred eighty-one million, seven hundred twenty-two thousand, two hundred twenty-one".