1100123201123 has 4 divisors (see below), whose sum is σ = 1100125369200. Its totient is φ = 1100121033048.

The previous prime is 1100123201059. The next prime is 1100123201137. The reversal of 1100123201123 is 3211023210011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100123201123 - 2⁶ = 1100123201059 is a prime.

It is a super-2 number, since 2×1100123201123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100123201153) 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, 131186 + ... + 1489112.

It is an arithmetic number, because the mean of its divisors is an integer number (275031342300).

Almost surely, 2^{1100123201123} is an apocalyptic number.

1100123201123 is a deficient number, since it is larger than the sum of its proper divisors (2168077).

1100123201123 is an equidigital number, since it uses as much as digits as its factorization.

1100123201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168076.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1100123201123 its reverse (3211023210011), we get a palindrome (4311146411134).

The spelling of 1100123201123 in words is "one trillion, one hundred billion, one hundred twenty-three million, two hundred one thousand, one hundred twenty-three".