21041535011 has 8 divisors (see below), whose sum is σ = 24633992544. Its totient is φ = 17595708480.

The previous prime is 21041535007. The next prime is 21041535071. The reversal of 21041535011 is 11053514012.

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

It is not a de Polignac number, because 21041535011 - 2² = 21041535007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21041535071) 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, 36657440 + ... + 36658013.

It is an arithmetic number, because the mean of its divisors is an integer number (3079249068).

Almost surely, 2^21041535011 is an apocalyptic number.

21041535011 is a deficient number, since it is larger than the sum of its proper divisors (3592457533).

21041535011 is an equidigital number, since it uses as much as digits as its factorization.

21041535011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73315501.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 21041535011 in words is "twenty-one billion, forty-one million, five hundred thirty-five thousand, eleven".