21112627 has 4 divisors (see below), whose sum is σ = 21367080. Its totient is φ = 20858176.

The previous prime is 21112601. The next prime is 21112633. The reversal of 21112627 is 72621112.

It is a happy number.

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 21112627 - 2¹⁹ = 20588339 is a prime.

It is a super-2 number, since 2×21112627² = 891486037682258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112598 and 21112607.

It is not an unprimeable number, because it can be changed into a prime (21112127) 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 3 ways as a sum of consecutive naturals, for example, 127102 + ... + 127267.

It is an arithmetic number, because the mean of its divisors is an integer number (5341770).

Almost surely, 2^21112627 is an apocalyptic number.

21112627 is a deficient number, since it is larger than the sum of its proper divisors (254453).

21112627 is an equidigital number, since it uses as much as digits as its factorization.

21112627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254452.

The product of its digits is 336, while the sum is 22.

The square root of 21112627 is about 4594.8478756102. The cubic root of 21112627 is about 276.3847597051.

Adding to 21112627 its reverse (72621112), we get a palindrome (93733739).

The spelling of 21112627 in words is "twenty-one million, one hundred twelve thousand, six hundred twenty-seven".