1200000099 has 8 divisors (see below), whose sum is σ = 1634042880. Its totient is φ = 782978696.

The previous prime is 1200000079. The next prime is 1200000101. The reversal of 1200000099 is 9900000021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200000099 - 2¹³ = 1199991907 is a prime.

1200000099 is a modest number, since divided by 99 gives 12 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1200000059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4255179 + ... + 4255460.

It is an arithmetic number, because the mean of its divisors is an integer number (204255360).

Almost surely, 2^1200000099 is an apocalyptic number.

1200000099 is a deficient number, since it is larger than the sum of its proper divisors (434042781).

1200000099 is an equidigital number, since it uses as much as digits as its factorization.

1200000099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510689.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1200000099 is about 34641.0175803194. The cubic root of 1200000099 is about 1062.6585984057.

The spelling of 1200000099 in words is "one billion, two hundred million, ninety-nine", and thus it is an aban number.