2112102000221 has 4 divisors (see below), whose sum is σ = 2116683566844. Its totient is φ = 2107520433600.

The previous prime is 2112102000209. The next prime is 2112102000223. The reversal of 2112102000221 is 1220002012112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1286931424900 + 825170575321 = 1134430^2 + 908389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112102000221 - 2⁶ = 2112102000157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112102000196 and 2112102000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112102000223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2290782620 + ... + 2290783541.

It is an arithmetic number, because the mean of its divisors is an integer number (529170891711).

Almost surely, 2^{2112102000221} is an apocalyptic number.

It is an amenable number.

2112102000221 is a deficient number, since it is larger than the sum of its proper divisors (4581566623).

2112102000221 is an equidigital number, since it uses as much as digits as its factorization.

2112102000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581566622.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112102000221 its reverse (1220002012112), we get a palindrome (3332104012333).

The spelling of 2112102000221 in words is "two trillion, one hundred twelve billion, one hundred two million, two hundred twenty-one", and thus it is an aban number.