1204222135 has 4 divisors (see below), whose sum is σ = 1445066568. Its totient is φ = 963377704.

The previous prime is 1204222133. The next prime is 1204222163. The reversal of 1204222135 is 5312224021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1204222135 - 2¹ = 1204222133 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 (1204222133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120422209 + ... + 120422218.

It is an arithmetic number, because the mean of its divisors is an integer number (361266642).

Almost surely, 2^1204222135 is an apocalyptic number.

1204222135 is a deficient number, since it is larger than the sum of its proper divisors (240844433).

1204222135 is an equidigital number, since it uses as much as digits as its factorization.

1204222135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240844432.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1204222135 is about 34701.9039103044. The cubic root of 1204222135 is about 1063.9034125558.

Adding to 1204222135 its reverse (5312224021), we get a palindrome (6516446156).

The spelling of 1204222135 in words is "one billion, two hundred four million, two hundred twenty-two thousand, one hundred thirty-five".