2100000210221 has 8 divisors (see below), whose sum is σ = 2101131189144. Its totient is φ = 2098869537600.

The previous prime is 2100000210211. The next prime is 2100000210233. The reversal of 2100000210221 is 1220120000012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19150684996 + 2080849525225 = 138386^2 + 1442515^2 .

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 2100000210221 - 2³⁴ = 2082820341037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100000210211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14362535 + ... + 14508011.

It is an arithmetic number, because the mean of its divisors is an integer number (262641398643).

Almost surely, 2^{2100000210221} is an apocalyptic number.

It is an amenable number.

2100000210221 is a deficient number, since it is larger than the sum of its proper divisors (1130978923).

2100000210221 is a wasteful number, since it uses less digits than its factorization.

2100000210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153151.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2100000210221 its reverse (1220120000012), we get a palindrome (3320120210233).

The spelling of 2100000210221 in words is "two trillion, one hundred billion, two hundred ten thousand, two hundred twenty-one".