11322121123 has 6 divisors (see below), whose sum is σ = 11510776212. Its totient is φ = 11136508920.

The previous prime is 11322121121. The next prime is 11322121127. The reversal of 11322121123 is 32112122311.

It is not a de Polignac number, because 11322121123 - 2¹ = 11322121121 is a prime.

It is a super-2 number, since 2×11322121123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11322121123.

It is not an unprimeable number, because it can be changed into a prime (11322121121) 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 5 ways as a sum of consecutive naturals, for example, 1517661 + ... + 1525102.

It is an arithmetic number, because the mean of its divisors is an integer number (1918462702).

Almost surely, 2^11322121123 is an apocalyptic number.

11322121123 is a deficient number, since it is larger than the sum of its proper divisors (188655089).

11322121123 is an frugal number, since it uses more digits than its factorization.

11322121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042885 (or 3042824 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 11322121123 its reverse (32112122311), we get a palindrome (43434243434).

The spelling of 11322121123 in words is "eleven billion, three hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-three".