21063134 has 8 divisors (see below), whose sum is σ = 33257640. Its totient is φ = 9977256.

The previous prime is 21063131. The next prime is 21063137. The reversal of 21063134 is 43136012.

It is an interprime number because it is at equal distance from previous prime (21063131) and next prime (21063137).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21063134² = 887311227803912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21063131) 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 3 ways as a sum of consecutive naturals, for example, 277109 + ... + 277184.

It is an arithmetic number, because the mean of its divisors is an integer number (4157205).

Almost surely, 2^21063134 is an apocalyptic number.

21063134 is a deficient number, since it is larger than the sum of its proper divisors (12194506).

21063134 is a wasteful number, since it uses less digits than its factorization.

21063134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554314.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 21063134 is about 4589.4590095130. The cubic root of 21063134 is about 276.1686202691.

Adding to 21063134 its reverse (43136012), we get a palindrome (64199146).

The spelling of 21063134 in words is "twenty-one million, sixty-three thousand, one hundred thirty-four".