2122221105 has 24 divisors (see below), whose sum is σ = 3705377832. Its totient is φ = 1123586304.

The previous prime is 2122221083. The next prime is 2122221133. The reversal of 2122221105 is 5011222212.

It can be written as a sum of positive squares in 4 ways, for example, as 899460081 + 1222761024 = 29991^2 + 34968^2 .

It is not a de Polignac number, because 2122221105 - 2⁹ = 2122220593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165954 + ... + 178283.

It is an arithmetic number, because the mean of its divisors is an integer number (154390743).

Almost surely, 2^2122221105 is an apocalyptic number.

It is an amenable number.

2122221105 is a deficient number, since it is larger than the sum of its proper divisors (1583156727).

2122221105 is a wasteful number, since it uses less digits than its factorization.

2122221105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344385 (or 344382 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2122221105 is about 46067.5710777115. The cubic root of 2122221105 is about 1285.0801334858.

Adding to 2122221105 its reverse (5011222212), we get a palindrome (7133443317).

The spelling of 2122221105 in words is "two billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred five".