21041701 has 8 divisors (see below), whose sum is σ = 21477600. Its totient is φ = 20608560.

The previous prime is 21041677. The next prime is 21041707. The reversal of 21041701 is 10714012.

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 21041701 - 2²³ = 12653093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041707) 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, 21891 + ... + 22831.

It is an arithmetic number, because the mean of its divisors is an integer number (2684700).

Almost surely, 2^21041701 is an apocalyptic number.

It is an amenable number.

21041701 is a deficient number, since it is larger than the sum of its proper divisors (435899).

21041701 is an equidigital number, since it uses as much as digits as its factorization.

21041701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 21041701 is about 4587.1233905357. The cubic root of 21041701 is about 276.0749157763.

Adding to 21041701 its reverse (10714012), we get a palindrome (31755713).

The spelling of 21041701 in words is "twenty-one million, forty-one thousand, seven hundred one".