123212222233 has 4 divisors (see below), whose sum is σ = 123213050548. Its totient is φ = 123211393920.

The previous prime is 123212222227. The next prime is 123212222281. The reversal of 123212222233 is 332222212321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 100496608144 + 22715614089 = 317012^2 + 150717^2 .

It is a cyclic number.

It is not a de Polignac number, because 123212222233 - 2⁹ = 123212221721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123212222198 and 123212222207.

It is not an unprimeable number, because it can be changed into a prime (123212222633) 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, 122628 + ... + 511333.

It is an arithmetic number, because the mean of its divisors is an integer number (30803262637).

Almost surely, 2^123212222233 is an apocalyptic number.

It is an amenable number.

123212222233 is a deficient number, since it is larger than the sum of its proper divisors (828315).

123212222233 is an equidigital number, since it uses as much as digits as its factorization.

123212222233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828314.

The product of its digits is 3456, while the sum is 25.

Adding to 123212222233 its reverse (332222212321), we get a palindrome (455434434554).

The spelling of 123212222233 in words is "one hundred twenty-three billion, two hundred twelve million, two hundred twenty-two thousand, two hundred thirty-three".