11101213321 has 8 divisors (see below), whose sum is σ = 12111220800. Its totient is φ = 10091340240.

The previous prime is 11101213313. The next prime is 11101213433. The reversal of 11101213321 is 12331210111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11101213321 - 2³ = 11101213313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101213295 and 11101213304.

It is not an unprimeable number, because it can be changed into a prime (11101210321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227100 + ... + 271618.

It is an arithmetic number, because the mean of its divisors is an integer number (1513902600).

Almost surely, 2^11101213321 is an apocalyptic number.

11101213321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11101213321 is a deficient number, since it is larger than the sum of its proper divisors (1010007479).

11101213321 is a wasteful number, since it uses less digits than its factorization.

11101213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67199.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11101213321 its reverse (12331210111), we get a palindrome (23432423432).

It can be divided in two parts, 11101 and 213321, that added together give a palindrome (224422).

The spelling of 11101213321 in words is "eleven billion, one hundred one million, two hundred thirteen thousand, three hundred twenty-one".