21010534235 has 8 divisors (see below), whose sum is σ = 25282873440. Its totient is φ = 16761605824.

The previous prime is 21010534219. The next prime is 21010534271. The reversal of 21010534235 is 53243501012.

It is a happy number.

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 21010534235 - 2⁴ = 21010534219 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5850722 + ... + 5854311.

It is an arithmetic number, because the mean of its divisors is an integer number (3160359180).

Almost surely, 2^21010534235 is an apocalyptic number.

21010534235 is a deficient number, since it is larger than the sum of its proper divisors (4272339205).

21010534235 is a wasteful number, since it uses less digits than its factorization.

21010534235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705397.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 21010534235 in words is "twenty-one billion, ten million, five hundred thirty-four thousand, two hundred thirty-five".