21014241 has 8 divisors (see below), whose sum is σ = 28985280. Its totient is φ = 13526352.

The previous prime is 21014239. The next prime is 21014243. The reversal of 21014241 is 14241012.

It is an interprime number because it is at equal distance from previous prime (21014239) and next prime (21014243).

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

It is not a de Polignac number, because 21014241 - 2¹ = 21014239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21014241.

It is not an unprimeable number, because it can be changed into a prime (21014243) 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, 120685 + ... + 120858.

It is an arithmetic number, because the mean of its divisors is an integer number (3623160).

Almost surely, 2^21014241 is an apocalyptic number.

It is an amenable number.

21014241 is a deficient number, since it is larger than the sum of its proper divisors (7971039).

21014241 is a wasteful number, since it uses less digits than its factorization.

21014241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241575.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 21014241 is about 4584.1292521045. The cubic root of 21014241 is about 275.9547683701.

Adding to 21014241 its reverse (14241012), we get a palindrome (35255253).

The spelling of 21014241 in words is "twenty-one million, fourteen thousand, two hundred forty-one".