210001302021 has 16 divisors (see below), whose sum is σ = 320185843328. Its totient is φ = 119931796800.

The previous prime is 210001302011. The next prime is 210001302041. The reversal of 210001302021 is 120203100012.

It is not a de Polignac number, because 210001302021 - 2⁵ = 210001301989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210001301988 and 210001302006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001302011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2835370 + ... + 2908491.

It is an arithmetic number, because the mean of its divisors is an integer number (20011615208).

Almost surely, 2^210001302021 is an apocalyptic number.

210001302021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210001302021 is a deficient number, since it is larger than the sum of its proper divisors (110184541307).

210001302021 is a wasteful number, since it uses less digits than its factorization.

210001302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745612.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 210001302021 its reverse (120203100012), we get a palindrome (330204402033).

The spelling of 210001302021 in words is "two hundred ten billion, one million, three hundred two thousand, twenty-one".