11215211133 has 8 divisors (see below), whose sum is σ = 17089845568. Its totient is φ = 6408692064.

The previous prime is 11215211131. The next prime is 11215211167. The reversal of 11215211133 is 33111251211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11215211133 - 2¹ = 11215211131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 534057673 = 11215211133 / (1 + 1 + 2 + 1 + 5 + 2 + 1 + 1 + 1 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215211131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267028816 + ... + 267028857.

It is an arithmetic number, because the mean of its divisors is an integer number (2136230696).

Almost surely, 2^11215211133 is an apocalyptic number.

It is an amenable number.

11215211133 is a deficient number, since it is larger than the sum of its proper divisors (5874634435).

11215211133 is an equidigital number, since it uses as much as digits as its factorization.

11215211133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534057683.

The product of its digits is 180, while the sum is 21.

Adding to 11215211133 its reverse (33111251211), we get a palindrome (44326462344).

The spelling of 11215211133 in words is "eleven billion, two hundred fifteen million, two hundred eleven thousand, one hundred thirty-three".