11020321123 has 8 divisors (see below), whose sum is σ = 12615406592. Its totient is φ = 9430424136.

The previous prime is 11020321121. The next prime is 11020321189. The reversal of 11020321123 is 32112302011.

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

It is not a de Polignac number, because 11020321123 - 2¹ = 11020321121 is a prime.

It is a super-2 number, since 2×11020321123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020321097 and 11020321106.

It is not an unprimeable number, because it can be changed into a prime (11020321121) 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, 1292565 + ... + 1301062.

It is an arithmetic number, because the mean of its divisors is an integer number (1576925824).

Almost surely, 2^11020321123 is an apocalyptic number.

11020321123 is a deficient number, since it is larger than the sum of its proper divisors (1595085469).

11020321123 is an equidigital number, since it uses as much as digits as its factorization.

11020321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594241.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11020321123 its reverse (32112302011), we get a palindrome (43132623134).

The spelling of 11020321123 in words is "eleven billion, twenty million, three hundred twenty-one thousand, one hundred twenty-three".