1222050205 has 4 divisors (see below), whose sum is σ = 1466460252. Its totient is φ = 977640160.

The previous prime is 1222050197. The next prime is 1222050211. The reversal of 1222050205 is 5020502221.

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 953450884 + 268599321 = 30878^2 + 16389^2 .

It is not a de Polignac number, because 1222050205 - 2³ = 1222050197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122205016 + ... + 122205025.

It is an arithmetic number, because the mean of its divisors is an integer number (366615063).

Almost surely, 2^1222050205 is an apocalyptic number.

It is an amenable number.

1222050205 is a deficient number, since it is larger than the sum of its proper divisors (244410047).

1222050205 is an equidigital number, since it uses as much as digits as its factorization.

1222050205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244410046.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1222050205 is about 34957.8346726453. The cubic root of 1222050205 is about 1069.1279484502.

Adding to 1222050205 its reverse (5020502221), we get a palindrome (6242552426).

The spelling of 1222050205 in words is "one billion, two hundred twenty-two million, fifty thousand, two hundred five".