21852127 has 8 divisors (see below), whose sum is σ = 24393600. Its totient is φ = 19403160.

The previous prime is 21852121. The next prime is 21852137. The reversal of 21852127 is 72125812.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21852127 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21852095 and 21852104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21852121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22627 + ... + 23572.

It is an arithmetic number, because the mean of its divisors is an integer number (3049200).

Almost surely, 2^21852127 is an apocalyptic number.

21852127 is a deficient number, since it is larger than the sum of its proper divisors (2541473).

21852127 is a wasteful number, since it uses less digits than its factorization.

21852127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46253.

The product of its digits is 2240, while the sum is 28.

The square root of 21852127 is about 4674.6258673823. The cubic root of 21852127 is about 279.5747242985.

Adding to 21852127 its reverse (72125812), we get a palindrome (93977939).

The spelling of 21852127 in words is "twenty-one million, eight hundred fifty-two thousand, one hundred twenty-seven".