30123112122 has 12 divisors (see below), whose sum is σ = 65266742970. Its totient is φ = 10041037368.

The previous prime is 30123112109. The next prime is 30123112133. The reversal of 30123112122 is 22121132103.

30123112122 is a `hidden beast` number, since 301 + 231 + 12 + 122 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30122726481 + 385641 = 173559^2 + 621^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1673506229 = 30123112122 / (3 + 0 + 1 + 2 + 3 + 1 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 30123112095 and 30123112104.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 836753097 + ... + 836753132.

Almost surely, 2^30123112122 is an apocalyptic number.

30123112122 is an abundant number, since it is smaller than the sum of its proper divisors (35143630848).

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

30123112122 is a wasteful number, since it uses less digits than its factorization.

30123112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673506237 (or 1673506234 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 30123112122 its reverse (22121132103), we get a palindrome (52244244225).

The spelling of 30123112122 in words is "thirty billion, one hundred twenty-three million, one hundred twelve thousand, one hundred twenty-two".