123122212133 has 4 divisors (see below), whose sum is σ = 123293453760. Its totient is φ = 122950970508.

The previous prime is 123122212127. The next prime is 123122212141. The reversal of 123122212133 is 331212221321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331212221321 = 1997 ⋅165854893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123122212133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123122212099 and 123122212108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123122212183) 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, 85619735 + ... + 85621172.

It is an arithmetic number, because the mean of its divisors is an integer number (30823363440).

Almost surely, 2^123122212133 is an apocalyptic number.

It is an amenable number.

123122212133 is a deficient number, since it is larger than the sum of its proper divisors (171241627).

123122212133 is an equidigital number, since it uses as much as digits as its factorization.

123122212133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171241626.

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

Adding to 123122212133 its reverse (331212221321), we get a palindrome (454334433454).

The spelling of 123122212133 in words is "one hundred twenty-three billion, one hundred twenty-two million, two hundred twelve thousand, one hundred thirty-three".