21300711 has 16 divisors (see below), whose sum is σ = 30585600. Its totient is φ = 13136768.

The previous prime is 21300679. The next prime is 21300733. The reversal of 21300711 is 11700312.

It is a cyclic number.

It is not a de Polignac number, because 21300711 - 2⁵ = 21300679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531 + ... + 6548.

It is an arithmetic number, because the mean of its divisors is an integer number (1911600).

Almost surely, 2^21300711 is an apocalyptic number.

21300711 is a deficient number, since it is larger than the sum of its proper divisors (9284889).

21300711 is a wasteful number, since it uses less digits than its factorization.

21300711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7158.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 21300711 is about 4615.2693312525. The cubic root of 21300711 is about 277.2030684784.

The spelling of 21300711 in words is "twenty-one million, three hundred thousand, seven hundred eleven".