1204221205 has 16 divisors (see below), whose sum is σ = 1578792384. Its totient is φ = 874487680.

The previous prime is 1204221167. The next prime is 1204221233. The reversal of 1204221205 is 5021224021.

It is not a de Polignac number, because 1204221205 - 2²³ = 1195832597 is a prime.

It is a super-5 number, since 5×1204221205⁵ (a number of 47 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21537 + ... + 53593.

It is an arithmetic number, because the mean of its divisors is an integer number (98674524).

Almost surely, 2^1204221205 is an apocalyptic number.

It is an amenable number.

1204221205 is a deficient number, since it is larger than the sum of its proper divisors (374571179).

1204221205 is a wasteful number, since it uses less digits than its factorization.

1204221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32756.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1204221205 is about 34701.8905104607. The cubic root of 1204221205 is about 1063.9031386776.

Adding to 1204221205 its reverse (5021224021), we get a palindrome (6225445226).

The spelling of 1204221205 in words is "one billion, two hundred four million, two hundred twenty-one thousand, two hundred five".