12201515050 has 24 divisors (see below), whose sum is σ = 22702097196. Its totient is φ = 4879040640.

The previous prime is 12201515047. The next prime is 12201515069. The reversal of 12201515050 is 5051510221.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7026295329 + 5175219721 = 83823^2 + 71939^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125142 + ... + 200158.

Almost surely, 2^12201515050 is an apocalyptic number.

12201515050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12201515050 is a deficient number, since it is larger than the sum of its proper divisors (10500582146).

12201515050 is a wasteful number, since it uses less digits than its factorization.

12201515050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78282 (or 78277 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The spelling of 12201515050 in words is "twelve billion, two hundred one million, five hundred fifteen thousand, fifty".