123022300212 has 54 divisors (see below), whose sum is σ = 361744149858. Its totient is φ = 35149228128.

The previous prime is 123022300189. The next prime is 123022300213. The reversal of 123022300212 is 212003220321.

123022300212 is a `hidden beast` number, since 1 + 230 + 223 + 0 + 0 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117514582416 + 5507717796 = 342804^2 + 74214^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123022300213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34868503 + ... + 34872030.

Almost surely, 2^123022300212 is an apocalyptic number.

123022300212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123022300212 is an abundant number, since it is smaller than the sum of its proper divisors (238721849646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123022300212 is a wasteful number, since it uses less digits than its factorization.

123022300212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69740557 (or 69740545 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123022300212 its reverse (212003220321), we get a palindrome (335025520533).

The spelling of 123022300212 in words is "one hundred twenty-three billion, twenty-two million, three hundred thousand, two hundred twelve".