1200201099 has 4 divisors (see below), whose sum is σ = 1600268136. Its totient is φ = 800134064.

The previous prime is 1200201097. The next prime is 1200201113. The reversal of 1200201099 is 9901020021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200201099 - 2¹ = 1200201097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200201097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200033514 + ... + 200033519.

It is an arithmetic number, because the mean of its divisors is an integer number (400067034).

Almost surely, 2^1200201099 is an apocalyptic number.

1200201099 is a deficient number, since it is larger than the sum of its proper divisors (400067037).

1200201099 is an equidigital number, since it uses as much as digits as its factorization.

1200201099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400067036.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1200201099 is about 34643.9186438255. The cubic root of 1200201099 is about 1062.7179268602.

The spelling of 1200201099 in words is "one billion, two hundred million, two hundred one thousand, ninety-nine".