123021011212 has 18 divisors (see below), whose sum is σ = 236637524564. Its totient is φ = 55918641240.

The previous prime is 123021011171. The next prime is 123021011219. The reversal of 123021011212 is 212110120321.

It is not an unprimeable number, because it can be changed into a prime (123021011219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127087338 + ... + 127088305.

Almost surely, 2^123021011212 is an apocalyptic number.

It is an amenable number.

123021011212 is a deficient number, since it is larger than the sum of its proper divisors (113616513352).

123021011212 is a wasteful number, since it uses less digits than its factorization.

123021011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254175669 (or 254175656 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 123021011212 its reverse (212110120321), we get a palindrome (335131131533).

The spelling of 123021011212 in words is "one hundred twenty-three billion, twenty-one million, eleven thousand, two hundred twelve".