21146114066 has 32 divisors (see below), whose sum is σ = 39937553280. Its totient is φ = 8157168000.

The previous prime is 21146114057. The next prime is 21146114069. The reversal of 21146114066 is 66041164112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21146114069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664211 + ... + 695318.

It is an arithmetic number, because the mean of its divisors is an integer number (1248048540).

Almost surely, 2^21146114066 is an apocalyptic number.

21146114066 is a deficient number, since it is larger than the sum of its proper divisors (18791439214).

21146114066 is a wasteful number, since it uses less digits than its factorization.

21146114066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359650.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 21146114066 its reverse (66041164112), we get a palindrome (87187278178).

The spelling of 21146114066 in words is "twenty-one billion, one hundred forty-six million, one hundred fourteen thousand, sixty-six".