21136627 has 8 divisors (see below), whose sum is σ = 22430736. Its totient is φ = 19848192.

The previous prime is 21136613. The next prime is 21136649. The reversal of 21136627 is 72663112.

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

It is a cyclic number.

It is not a de Polignac number, because 21136627 - 2²³ = 12748019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21136595 and 21136604.

It is not an unprimeable number, because it can be changed into a prime (21136127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8163 + ... + 10435.

It is an arithmetic number, because the mean of its divisors is an integer number (2803842).

Almost surely, 2^21136627 is an apocalyptic number.

21136627 is a deficient number, since it is larger than the sum of its proper divisors (1294109).

21136627 is a wasteful number, since it uses less digits than its factorization.

21136627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837.

The product of its digits is 3024, while the sum is 28.

The square root of 21136627 is about 4597.4587545730. The cubic root of 21136627 is about 276.4894478041.

Adding to 21136627 its reverse (72663112), we get a palindrome (93799739).

The spelling of 21136627 in words is "twenty-one million, one hundred thirty-six thousand, six hundred twenty-seven".