21001063035 has 32 divisors (see below), whose sum is σ = 34155463680. Its totient is φ = 11016822528.

The previous prime is 21001063021. The next prime is 21001063049. The reversal of 21001063035 is 53036010012.

It is an interprime number because it is at equal distance from previous prime (21001063021) and next prime (21001063049).

It is not a de Polignac number, because 21001063035 - 2³⁴ = 3821193851 is a prime.

It is a super-2 number, since 2×21001063035² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 375736 + ... + 427994.

It is an arithmetic number, because the mean of its divisors is an integer number (1067358240).

Almost surely, 2^21001063035 is an apocalyptic number.

21001063035 is a deficient number, since it is larger than the sum of its proper divisors (13154400645).

21001063035 is a wasteful number, since it uses less digits than its factorization.

21001063035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52707.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 21001063035 its reverse (53036010012), we get a palindrome (74037073047).

The spelling of 21001063035 in words is "twenty-one billion, one million, sixty-three thousand, thirty-five".