1331200011 has 32 divisors (see below), whose sum is σ = 1918591488. Its totient is φ = 817943040.

The previous prime is 1331200009. The next prime is 1331200027. The reversal of 1331200011 is 1100021331.

It is not a de Polignac number, because 1331200011 - 2¹ = 1331200009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331200011.

It is not an unprimeable number, because it can be changed into a prime (1331200001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817380 + ... + 819006.

It is an arithmetic number, because the mean of its divisors is an integer number (59955984).

Almost surely, 2^1331200011 is an apocalyptic number.

1331200011 is a deficient number, since it is larger than the sum of its proper divisors (587391477).

1331200011 is a wasteful number, since it uses less digits than its factorization.

1331200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1331200011 is about 36485.6137539168. The cubic root of 1331200011 is about 1100.0550966893.

Adding to 1331200011 its reverse (1100021331), we get a palindrome (2431221342).

The spelling of 1331200011 in words is "one billion, three hundred thirty-one million, two hundred thousand, eleven".