210011002021 has 8 divisors (see below), whose sum is σ = 210592651544. Its totient is φ = 209429452800.

The previous prime is 210011002009. The next prime is 210011002049. The reversal of 210011002021 is 120200110012.

It can be written as a sum of positive squares in 4 ways, for example, as 54155805796 + 155855196225 = 232714^2 + 394785^2 .

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 210011002021 - 2¹⁵ = 210010969253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210011001989 and 210011002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011000021) 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, 6465421 + ... + 6497821.

It is an arithmetic number, because the mean of its divisors is an integer number (26324081443).

Almost surely, 2^210011002021 is an apocalyptic number.

It is an amenable number.

210011002021 is a deficient number, since it is larger than the sum of its proper divisors (581649523).

210011002021 is a wasteful number, since it uses less digits than its factorization.

210011002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50151.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210011002021 its reverse (120200110012), we get a palindrome (330211112033).

The spelling of 210011002021 in words is "two hundred ten billion, eleven million, two thousand, twenty-one".