21010035 has 8 divisors (see below), whose sum is σ = 33616080. Its totient is φ = 11205344.

The previous prime is 21010013. The next prime is 21010037. The reversal of 21010035 is 53001012.

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 21010035 - 2⁷ = 21009907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21010035.

It is not an unprimeable number, because it can be changed into a prime (21010037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700320 + ... + 700349.

It is an arithmetic number, because the mean of its divisors is an integer number (4202010).

Almost surely, 2^21010035 is an apocalyptic number.

21010035 is a deficient number, since it is larger than the sum of its proper divisors (12606045).

21010035 is a wasteful number, since it uses less digits than its factorization.

21010035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400677.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 21010035 is about 4583.6704724489. The cubic root of 21010035 is about 275.9363563609.

Adding to 21010035 its reverse (53001012), we get a palindrome (74011047).

The spelling of 21010035 in words is "twenty-one million, ten thousand, thirty-five".