1213225336 has 8 divisors (see below), whose sum is σ = 2274797520. Its totient is φ = 606612664.

The previous prime is 1213225333. The next prime is 1213225337. The reversal of 1213225336 is 6335223121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213225333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75826576 + ... + 75826591.

It is an arithmetic number, because the mean of its divisors is an integer number (284349690).

Almost surely, 2^1213225336 is an apocalyptic number.

It is an amenable number.

1213225336 is a deficient number, since it is larger than the sum of its proper divisors (1061572184).

1213225336 is a wasteful number, since it uses less digits than its factorization.

1213225336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151653173 (or 151653169 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 1213225336 is about 34831.3843537692. The cubic root of 1213225336 is about 1066.5482081124.

Adding to 1213225336 its reverse (6335223121), we get a palindrome (7548448457).

The spelling of 1213225336 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, three hundred thirty-six".