21160134230252 has 12 divisors (see below), whose sum is σ = 37032498064296. Its totient is φ = 10579420497600.

The previous prime is 21160134230171. The next prime is 21160134230299. The reversal of 21160134230252 is 25203243106112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161580749 + ... + 161711652.

It is an arithmetic number, because the mean of its divisors is an integer number (3086041505358).

Almost surely, 2^{21160134230252} is an apocalyptic number.

It is an amenable number.

21160134230252 is a deficient number, since it is larger than the sum of its proper divisors (15872363834044).

21160134230252 is a wasteful number, since it uses less digits than its factorization.

21160134230252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323308768 (or 323308766 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 21160134230252 its reverse (25203243106112), we get a palindrome (46363377336364).

The spelling of 21160134230252 in words is "twenty-one trillion, one hundred sixty billion, one hundred thirty-four million, two hundred thirty thousand, two hundred fifty-two".