123211401233 has 4 divisors (see below), whose sum is σ = 123301141428. Its totient is φ = 123121661040.

The previous prime is 123211401223. The next prime is 123211401241. The reversal of 123211401233 is 332104112321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332104112321 = 47 ⋅7066044943.

It can be written as a sum of positive squares in 2 ways, for example, as 109529888209 + 13681513024 = 330953^2 + 116968^2 .

It is a cyclic number.

It is not a de Polignac number, because 123211401233 - 2⁶ = 123211401169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123211401199 and 123211401208.

It is not an unprimeable number, because it can be changed into a prime (123211401223) 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 3 ways as a sum of consecutive naturals, for example, 44868038 + ... + 44870783.

It is an arithmetic number, because the mean of its divisors is an integer number (30825285357).

Almost surely, 2^123211401233 is an apocalyptic number.

It is an amenable number.

123211401233 is a deficient number, since it is larger than the sum of its proper divisors (89740195).

123211401233 is an equidigital number, since it uses as much as digits as its factorization.

123211401233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89740194.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123211401233 its reverse (332104112321), we get a palindrome (455315513554).

The spelling of 123211401233 in words is "one hundred twenty-three billion, two hundred eleven million, four hundred one thousand, two hundred thirty-three".