1206212500 has 36 divisors (see below), whose sum is σ = 2638448316. Its totient is φ = 482480000.

The previous prime is 1206212489. The next prime is 1206212521. The reversal of 1206212500 is 52126021.

It can be written as a sum of positive squares in 6 ways, for example, as 1182534544 + 23677956 = 34388^2 + 4866^2 .

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 11 ways as a sum of consecutive naturals, for example, 35749 + ... + 60748.

It is an arithmetic number, because the mean of its divisors is an integer number (73290231).

Almost surely, 2^1206212500 is an apocalyptic number.

1206212500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206212500 is an abundant number, since it is smaller than the sum of its proper divisors (1432235816).

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

1206212500 is an frugal number, since it uses more digits than its factorization.

1206212500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96526 (or 96504 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1206212500 is about 34730.5701076156. The cubic root of 1206212500 is about 1064.4892376226.

Adding to 1206212500 its reverse (52126021), we get a palindrome (1258338521).

The spelling of 1206212500 in words is "one billion, two hundred six million, two hundred twelve thousand, five hundred".