11021323011 has 12 divisors (see below), whose sum is σ = 15361795848. Its totient is φ = 7028089024.

The previous prime is 11021323007. The next prime is 11021323013. The reversal of 11021323011 is 11032312011.

It is a happy number.

It is not a de Polignac number, because 11021323011 - 2² = 11021323007 is a prime.

It is a super-2 number, since 2×11021323011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11021323013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3470790 + ... + 3473963.

It is an arithmetic number, because the mean of its divisors is an integer number (1280149654).

Almost surely, 2^11021323011 is an apocalyptic number.

11021323011 is a deficient number, since it is larger than the sum of its proper divisors (4340472837).

11021323011 is an equidigital number, since it uses as much as digits as its factorization.

11021323011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944802 (or 6944779 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11021323011 its reverse (11032312011), we get a palindrome (22053635022).

The spelling of 11021323011 in words is "eleven billion, twenty-one million, three hundred twenty-three thousand, eleven".