21337041 has 8 divisors (see below), whose sum is σ = 31035744. Its totient is φ = 12931520.

The previous prime is 21337037. The next prime is 21337061. The reversal of 21337041 is 14073312.

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 21337041 - 2² = 21337037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21336999 and 21337017.

It is not an unprimeable number, because it can be changed into a prime (21337061) 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, 323256 + ... + 323321.

It is an arithmetic number, because the mean of its divisors is an integer number (3879468).

Almost surely, 2^21337041 is an apocalyptic number.

It is an amenable number.

21337041 is a deficient number, since it is larger than the sum of its proper divisors (9698703).

21337041 is a wasteful number, since it uses less digits than its factorization.

21337041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646591.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 21337041 is about 4619.2035027697. The cubic root of 21337041 is about 277.3605760126.

The spelling of 21337041 in words is "twenty-one million, three hundred thirty-seven thousand, forty-one".