21134146307 has 4 divisors (see below), whose sum is σ = 21151570560. Its totient is φ = 21116722056.

The previous prime is 21134146277. The next prime is 21134146333. The reversal of 21134146307 is 70364143112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21134146307 - 2¹⁰ = 21134145283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21134149307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8710307 + ... + 8712732.

It is an arithmetic number, because the mean of its divisors is an integer number (5287892640).

Almost surely, 2^21134146307 is an apocalyptic number.

21134146307 is a deficient number, since it is larger than the sum of its proper divisors (17424253).

21134146307 is a wasteful number, since it uses less digits than its factorization.

21134146307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17424252.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 21134146307 its reverse (70364143112), we get a palindrome (91498289419).

The spelling of 21134146307 in words is "twenty-one billion, one hundred thirty-four million, one hundred forty-six thousand, three hundred seven".