1200015011 has 4 divisors (see below), whose sum is σ = 1292323872. Its totient is φ = 1107706152.

The previous prime is 1200014971. The next prime is 1200015017. The reversal of 1200015011 is 1105100021.

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 1200015011 - 2¹⁸ = 1199752867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200014983 and 1200015001.

It is not an unprimeable number, because it can be changed into a prime (1200015017) 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, 46154411 + ... + 46154436.

It is an arithmetic number, because the mean of its divisors is an integer number (323080968).

Almost surely, 2^1200015011 is an apocalyptic number.

1200015011 is a deficient number, since it is larger than the sum of its proper divisors (92308861).

1200015011 is an equidigital number, since it uses as much as digits as its factorization.

1200015011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92308860.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1200015011 is about 34641.2328158222. The cubic root of 1200015011 is about 1062.6630001552.

Adding to 1200015011 its reverse (1105100021), we get a palindrome (2305115032).

The spelling of 1200015011 in words is "one billion, two hundred million, fifteen thousand, eleven".