11211033138 has 8 divisors (see below), whose sum is σ = 22422066288. Its totient is φ = 3737011044.

The previous prime is 11211033137. The next prime is 11211033139. The reversal of 11211033138 is 83133011211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11211033137) and next prime (11211033139).

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

11211033138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11211033137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934252756 + ... + 934252767.

It is an arithmetic number, because the mean of its divisors is an integer number (2802758286).

Almost surely, 2^11211033138 is an apocalyptic number.

11211033138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211033138 is a wasteful number, since it uses less digits than its factorization.

11211033138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868505528.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 11211033138 its reverse (83133011211), we get a palindrome (94344044349).

The spelling of 11211033138 in words is "eleven billion, two hundred eleven million, thirty-three thousand, one hundred thirty-eight".