1288211013 has 16 divisors (see below), whose sum is σ = 1917027840. Its totient is φ = 854952192.

The previous prime is 1288211011. The next prime is 1288211017. The reversal of 1288211013 is 3101128821.

It is not a de Polignac number, because 1288211013 - 2¹ = 1288211011 is a prime.

It is a super-2 number, since 2×1288211013² = 3318975228028972338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288211011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100956 + ... + 112997.

It is an arithmetic number, because the mean of its divisors is an integer number (119814240).

Almost surely, 2^1288211013 is an apocalyptic number.

It is an amenable number.

1288211013 is a deficient number, since it is larger than the sum of its proper divisors (628816827).

1288211013 is a wasteful number, since it uses less digits than its factorization.

1288211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214185 (or 214179 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 1288211013 is about 35891.6565931415. The cubic root of 1288211013 is about 1088.0837788378.

Adding to 1288211013 its reverse (3101128821), we get a palindrome (4389339834).

The spelling of 1288211013 in words is "one billion, two hundred eighty-eight million, two hundred eleven thousand, thirteen".