21134230134425 has 12 divisors (see below), whose sum is σ = 27051814573056. Its totient is φ = 16361984619600.

The previous prime is 21134230134397. The next prime is 21134230134497. The reversal of 21134230134425 is 52443103243112.

It is not a de Polignac number, because 21134230134425 - 2²⁴ = 21134213357209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13634986409 + ... + 13634987958.

It is an arithmetic number, because the mean of its divisors is an integer number (2254317881088).

Almost surely, 2^{21134230134425} is an apocalyptic number.

21134230134425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21134230134425 is a deficient number, since it is larger than the sum of its proper divisors (5917584438631).

21134230134425 is a wasteful number, since it uses less digits than its factorization.

21134230134425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27269974408 (or 27269974403 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 21134230134425 its reverse (52443103243112), we get a palindrome (73577333377537).

The spelling of 21134230134425 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred thirty million, one hundred thirty-four thousand, four hundred twenty-five".