2100000202221 has 8 divisors (see below), whose sum is σ = 2800020722080. Its totient is φ = 1399989908592.

The previous prime is 2100000202219. The next prime is 2100000202231. The reversal of 2100000202221 is 1222020000012.

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

It is not a de Polignac number, because 2100000202221 - 2¹ = 2100000202219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100000202197 and 2100000202206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100000202231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2063830 + ... + 2908503.

It is an arithmetic number, because the mean of its divisors is an integer number (350002590260).

Almost surely, 2^{2100000202221} is an apocalyptic number.

It is an amenable number.

2100000202221 is a deficient number, since it is larger than the sum of its proper divisors (700020519859).

2100000202221 is a wasteful number, since it uses less digits than its factorization.

2100000202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113115.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2100000202221 its reverse (1222020000012), we get a palindrome (3322020202233).

The spelling of 2100000202221 in words is "two trillion, one hundred billion, two hundred two thousand, two hundred twenty-one".