21174011 has 2 divisors, whose sum is σ = 21174012. Its totient is φ = 21174010.

The previous prime is 21174001. The next prime is 21174029. The reversal of 21174011 is 11047112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21174011 - 2¹⁴ = 21157627 is a prime.

It is not a weakly prime, because it can be changed into another prime (21174001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10587005 + 10587006.

It is an arithmetic number, because the mean of its divisors is an integer number (10587006).

Almost surely, 2^21174011 is an apocalyptic number.

21174011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21174011 is an equidigital number, since it uses as much as digits as its factorization.

21174011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 21174011 is about 4601.5226827649. The cubic root of 21174011 is about 276.6523592221.

The spelling of 21174011 in words is "twenty-one million, one hundred seventy-four thousand, eleven".