1206221560 has 16 divisors (see below), whose sum is σ = 2713998600. Its totient is φ = 482488608.

The previous prime is 1206221537. The next prime is 1206221581. The reversal of 1206221560 is 651226021.

It is a congruent number.

It is an unprimeable number.

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, 15077730 + ... + 15077809.

Almost surely, 2^1206221560 is an apocalyptic number.

1206221560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206221560 is an abundant number, since it is smaller than the sum of its proper divisors (1507777040).

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

1206221560 is a wasteful number, since it uses less digits than its factorization.

1206221560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30155550 (or 30155546 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1206221560 is about 34730.7005400121. The cubic root of 1206221560 is about 1064.4919027827.

Adding to 1206221560 its reverse (651226021), we get a palindrome (1857447581).

The spelling of 1206221560 in words is "one billion, two hundred six million, two hundred twenty-one thousand, five hundred sixty".