2112022221 has 8 divisors (see below), whose sum is σ = 2875945344. Its totient is φ = 1378056960.

The previous prime is 2112022177. The next prime is 2112022229. The reversal of 2112022221 is 1222202112.

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

It is not a de Polignac number, because 2112022221 - 2¹⁷ = 2111891149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112022229) 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, 7489300 + ... + 7489581.

It is an arithmetic number, because the mean of its divisors is an integer number (359493168).

Almost surely, 2^2112022221 is an apocalyptic number.

It is an amenable number.

2112022221 is a deficient number, since it is larger than the sum of its proper divisors (763923123).

2112022221 is a wasteful number, since it uses less digits than its factorization.

2112022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14978931.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2112022221 is about 45956.7429328929. The cubic root of 2112022221 is about 1283.0182316429.

Adding to 2112022221 its reverse (1222202112), we get a palindrome (3334224333).

The spelling of 2112022221 in words is "two billion, one hundred twelve million, twenty-two thousand, two hundred twenty-one".