1100023123321 has 4 divisors (see below), whose sum is σ = 1157919077200. Its totient is φ = 1042127169444.

The previous prime is 1100023123289. The next prime is 1100023123327. The reversal of 1100023123321 is 1233213200011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100023123321 - 2⁵ = 1100023123289 is a prime.

It is a super-3 number, since 3×1100023123321³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 57895953859 = 1100023123321 / (1 + 1 + 0 + 0 + 0 + 2 + 3 + 1 + 2 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100023123327) 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, 28947976911 + ... + 28947976948.

It is an arithmetic number, because the mean of its divisors is an integer number (289479769300).

Almost surely, 2^{1100023123321} is an apocalyptic number.

It is an amenable number.

1100023123321 is a deficient number, since it is larger than the sum of its proper divisors (57895953879).

1100023123321 is an equidigital number, since it uses as much as digits as its factorization.

1100023123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57895953878.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1100023123321 its reverse (1233213200011), we get a palindrome (2333236323332).

It can be divided in two parts, 110002 and 3123321, that added together give a palindrome (3233323).

The spelling of 1100023123321 in words is "one trillion, one hundred billion, twenty-three million, one hundred twenty-three thousand, three hundred twenty-one".