2112102221 has 4 divisors (see below), whose sum is σ = 2122716000. Its totient is φ = 2101488444.

The previous prime is 2112102197. The next prime is 2112102227. The reversal of 2112102221 is 1222012112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2112102221 - 2¹⁰ = 2112101197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112102196 and 2112102205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112102227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5306591 + ... + 5306988.

It is an arithmetic number, because the mean of its divisors is an integer number (530679000).

Almost surely, 2^2112102221 is an apocalyptic number.

It is an amenable number.

2112102221 is a deficient number, since it is larger than the sum of its proper divisors (10613779).

2112102221 is a wasteful number, since it uses less digits than its factorization.

2112102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10613778.

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

The square root of 2112102221 is about 45957.6133083519. The cubic root of 2112102221 is about 1283.0344309931.

Adding to 2112102221 its reverse (1222012112), we get a palindrome (3334114333).

The spelling of 2112102221 in words is "two billion, one hundred twelve million, one hundred two thousand, two hundred twenty-one".