134213154021 has 12 divisors (see below), whose sum is σ = 205267176972. Its totient is φ = 84212174976.

The previous prime is 134213154013. The next prime is 134213154067. The reversal of 134213154021 is 120451312431.

134213154021 is a `hidden beast` number, since 1 + 34 + 213 + 15 + 402 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81673637796 + 52539516225 = 285786^2 + 229215^2 .

It is not a de Polignac number, because 134213154021 - 2³ = 134213154013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134213154071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438604926 + ... + 438605231.

It is an arithmetic number, because the mean of its divisors is an integer number (17105598081).

Almost surely, 2^134213154021 is an apocalyptic number.

It is an amenable number.

134213154021 is a deficient number, since it is larger than the sum of its proper divisors (71054022951).

134213154021 is a wasteful number, since it uses less digits than its factorization.

134213154021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877210180 (or 877210177 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 134213154021 its reverse (120451312431), we get a palindrome (254664466452).

The spelling of 134213154021 in words is "one hundred thirty-four billion, two hundred thirteen million, one hundred fifty-four thousand, twenty-one".