1213334550 has 36 divisors (see below), whose sum is σ = 3259826700. Its totient is φ = 323555760.

The previous prime is 1213334539. The next prime is 1213334579. The reversal of 1213334550 is 554333121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1347700 + ... + 1348599.

Almost surely, 2^1213334550 is an apocalyptic number.

1213334550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213334550 is an abundant number, since it is smaller than the sum of its proper divisors (2046492150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213334550 is a wasteful number, since it uses less digits than its factorization.

1213334550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696317 (or 2696309 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1213334550 is about 34832.9520712787. The cubic root of 1213334550 is about 1066.5802105491.

Adding to 1213334550 its reverse (554333121), we get a palindrome (1767667671).

The spelling of 1213334550 in words is "one billion, two hundred thirteen million, three hundred thirty-four thousand, five hundred fifty".