11215209733 has 32 divisors (see below), whose sum is σ = 14171015936. Its totient is φ = 8638576128.

The previous prime is 11215209671. The next prime is 11215209751. The reversal of 11215209733 is 33790251211.

It is not a de Polignac number, because 11215209733 - 2⁹ = 11215209221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215209773) 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, 1220191 + ... + 1229347.

It is an arithmetic number, because the mean of its divisors is an integer number (442844248).

Almost surely, 2^11215209733 is an apocalyptic number.

11215209733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11215209733 is a deficient number, since it is larger than the sum of its proper divisors (2955806203).

11215209733 is a wasteful number, since it uses less digits than its factorization.

11215209733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9533.

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 11215209733 in words is "eleven billion, two hundred fifteen million, two hundred nine thousand, seven hundred thirty-three".