1213204050 has 36 divisors (see below), whose sum is σ = 3259476090. Its totient is φ = 323520960.

The previous prime is 1213204049. The next prime is 1213204061. The reversal of 1213204050 is 504023121.

It can be written as a sum of positive squares in 3 ways, for example, as 590052681 + 623151369 = 24291^2 + 24963^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1347555 + ... + 1348454.

Almost surely, 2^1213204050 is an apocalyptic number.

1213204050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213204050 is an abundant number, since it is smaller than the sum of its proper divisors (2046272040).

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

1213204050 is a wasteful number, since it uses less digits than its factorization.

1213204050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696027 (or 2696019 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1213204050 is about 34831.0787946627. The cubic root of 1213204050 is about 1066.5419705578.

Adding to 1213204050 its reverse (504023121), we get a palindrome (1717227171).

The spelling of 1213204050 in words is "one billion, two hundred thirteen million, two hundred four thousand, fifty".