2121232122 has 24 divisors (see below), whose sum is σ = 4624205664. Its totient is φ = 702738504.

The previous prime is 2121232051. The next prime is 2121232177. The reversal of 2121232122 is 2212321212.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2121232095 and 2121232104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358558 + ... + 364425.

It is an arithmetic number, because the mean of its divisors is an integer number (192675236).

Almost surely, 2^2121232122 is an apocalyptic number.

2121232122 is an abundant number, since it is smaller than the sum of its proper divisors (2502973542).

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

2121232122 is a wasteful number, since it uses less digits than its factorization.

2121232122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723154 (or 723151 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2121232122 is about 46056.8357792847. The cubic root of 2121232122 is about 1284.8804810436.

Adding to 2121232122 its reverse (2212321212), we get a palindrome (4333553334).

The spelling of 2121232122 in words is "two billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-two".