134252221 has 2 divisors, whose sum is σ = 134252222. Its totient is φ = 134252220.

The previous prime is 134252207. The next prime is 134252263. The reversal of 134252221 is 122252431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 63776196 = 8395^2 + 7986^2 .

It is a cyclic number.

It is not a de Polignac number, because 134252221 - 2⁷ = 134252093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134252192 and 134252201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134255221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67126110 + 67126111.

It is an arithmetic number, because the mean of its divisors is an integer number (67126111).

Almost surely, 2^134252221 is an apocalyptic number.

It is an amenable number.

134252221 is a deficient number, since it is larger than the sum of its proper divisors (1).

134252221 is an equidigital number, since it uses as much as digits as its factorization.

134252221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 134252221 is about 11586.7260690844. The cubic root of 134252221 is about 512.0438563609.

The spelling of 134252221 in words is "one hundred thirty-four million, two hundred fifty-two thousand, two hundred twenty-one".