21010210001 has 8 divisors (see below), whose sum is σ = 22954293984. Its totient is φ = 19071803520.

The previous prime is 21010209973. The next prime is 21010210007. The reversal of 21010210001 is 10001201012.

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

It is a de Polignac number, because none of the positive numbers 2^k-21010210001 is a prime.

It is a super-2 number, since 2×21010210001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010210007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1411631 + ... + 1426436.

It is an arithmetic number, because the mean of its divisors is an integer number (2869286748).

Almost surely, 2^21010210001 is an apocalyptic number.

It is an amenable number.

21010210001 is a deficient number, since it is larger than the sum of its proper divisors (1944083983).

21010210001 is a wasteful number, since it uses less digits than its factorization.

21010210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838751.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21010210001 its reverse (10001201012), we get a palindrome (31011411013).

The spelling of 21010210001 in words is "twenty-one billion, ten million, two hundred ten thousand, one".