1211052715 has 16 divisors (see below), whose sum is σ = 1545160320. Its totient is φ = 908052480.

The previous prime is 1211052691. The next prime is 1211052757. The reversal of 1211052715 is 5172501121.

It is not a de Polignac number, because 1211052715 - 2²¹ = 1208955563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211052715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9075 + ... + 50044.

It is an arithmetic number, because the mean of its divisors is an integer number (96572520).

Almost surely, 2^1211052715 is an apocalyptic number.

1211052715 is a deficient number, since it is larger than the sum of its proper divisors (334107605).

1211052715 is a wasteful number, since it uses less digits than its factorization.

1211052715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59382.

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 1211052715 is about 34800.1826863021. The cubic root of 1211052715 is about 1065.9111762422.

Adding to 1211052715 its reverse (5172501121), we get a palindrome (6383553836).

The spelling of 1211052715 in words is "one billion, two hundred eleven million, fifty-two thousand, seven hundred fifteen".