21046701 has 16 divisors (see below), whose sum is σ = 30504320. Its totient is φ = 12830400.

The previous prime is 21046681. The next prime is 21046709. The reversal of 21046701 is 10764012.

It is not a de Polignac number, because 21046701 - 2⁶ = 21046637 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 (21046709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (1906520).

Almost surely, 2^21046701 is an apocalyptic number.

It is an amenable number.

21046701 is a deficient number, since it is larger than the sum of its proper divisors (9457619).

21046701 is a wasteful number, since it uses less digits than its factorization.

21046701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 21046701 is about 4587.6683620332. The cubic root of 21046701 is about 276.0967813289.

The spelling of 21046701 in words is "twenty-one million, forty-six thousand, seven hundred one".