21941135 has 8 divisors (see below), whose sum is σ = 27878256. Its totient is φ = 16520320.

The previous prime is 21941131. The next prime is 21941141. The reversal of 21941135 is 53114912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21941135 - 2² = 21941131 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 (21941131) 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, 128981 + ... + 129150.

It is an arithmetic number, because the mean of its divisors is an integer number (3484782).

Almost surely, 2^21941135 is an apocalyptic number.

21941135 is a deficient number, since it is larger than the sum of its proper divisors (5937121).

21941135 is a wasteful number, since it uses less digits than its factorization.

21941135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258153.

The product of its digits is 1080, while the sum is 26.

The square root of 21941135 is about 4684.1365266183. The cubic root of 21941135 is about 279.9537976488.

The spelling of 21941135 in words is "twenty-one million, nine hundred forty-one thousand, one hundred thirty-five".