2112000221 has 4 divisors (see below), whose sum is σ = 2128630272. Its totient is φ = 2095370172.

The previous prime is 2112000211. The next prime is 2112000229. The reversal of 2112000221 is 1220002112.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2112000221 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 (2112000229) 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, 8314835 + ... + 8315088.

It is an arithmetic number, because the mean of its divisors is an integer number (532157568).

Almost surely, 2^2112000221 is an apocalyptic number.

It is an amenable number.

2112000221 is a deficient number, since it is larger than the sum of its proper divisors (16630051).

2112000221 is a wasteful number, since it uses less digits than its factorization.

2112000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16630050.

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

The square root of 2112000221 is about 45956.5035767518. The cubic root of 2112000221 is about 1283.0137767499.

Adding to 2112000221 its reverse (1220002112), we get a palindrome (3332002333).

The spelling of 2112000221 in words is "two billion, one hundred twelve million, two hundred twenty-one", and thus it is an aban number.