123020121212 has 6 divisors (see below), whose sum is σ = 215285212128. Its totient is φ = 61510060604.

The previous prime is 123020121181. The next prime is 123020121221. The reversal of 123020121212 is 212121020321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15377515148 + ... + 15377515155.

It is an arithmetic number, because the mean of its divisors is an integer number (35880868688).

Almost surely, 2^123020121212 is an apocalyptic number.

It is an amenable number.

123020121212 is a deficient number, since it is larger than the sum of its proper divisors (92265090916).

123020121212 is a wasteful number, since it uses less digits than its factorization.

123020121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30755030307 (or 30755030305 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123020121212 its reverse (212121020321), we get a palindrome (335141141533).

The spelling of 123020121212 in words is "one hundred twenty-three billion, twenty million, one hundred twenty-one thousand, two hundred twelve".