21941711 has 8 divisors (see below), whose sum is σ = 23981184. Its totient is φ = 19909720.

The previous prime is 21941681. The next prime is 21941737. The reversal of 21941711 is 11714912.

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 21941711 - 2¹⁴ = 21925327 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 (21941791) 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, 5576 + ... + 8658.

It is an arithmetic number, because the mean of its divisors is an integer number (2997648).

Almost surely, 2^21941711 is an apocalyptic number.

21941711 is a deficient number, since it is larger than the sum of its proper divisors (2039473).

21941711 is a wasteful number, since it uses less digits than its factorization.

21941711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741.

The product of its digits is 504, while the sum is 26.

The square root of 21941711 is about 4684.1980103322. The cubic root of 21941711 is about 279.9562474153.

The spelling of 21941711 in words is "twenty-one million, nine hundred forty-one thousand, seven hundred eleven".