134223407521 has 12 divisors (see below), whose sum is σ = 160357648192. Its totient is φ = 110046517416.

The previous prime is 134223407501. The next prime is 134223407533. The reversal of 134223407521 is 125704322431.

It is not a de Polignac number, because 134223407521 - 2⁵ = 134223407489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134223407501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18119901 + ... + 18127306.

Almost surely, 2^134223407521 is an apocalyptic number.

It is an amenable number.

134223407521 is a deficient number, since it is larger than the sum of its proper divisors (26134240671).

134223407521 is an equidigital number, since it uses as much as digits as its factorization.

134223407521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36247260 (or 36247237 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 134223407521 its reverse (125704322431), we get a palindrome (259927729952).

The spelling of 134223407521 in words is "one hundred thirty-four billion, two hundred twenty-three million, four hundred seven thousand, five hundred twenty-one".