212321123012 has 24 divisors (see below), whose sum is σ = 391160881440. Its totient is φ = 100562100480.

The previous prime is 212321123009. The next prime is 212321123023. The reversal of 212321123012 is 210321123212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563687 + ... + 861617.

It is an arithmetic number, because the mean of its divisors is an integer number (16298370060).

Almost surely, 2^212321123012 is an apocalyptic number.

It is an amenable number.

212321123012 is a deficient number, since it is larger than the sum of its proper divisors (178839758428).

212321123012 is a wasteful number, since it uses less digits than its factorization.

212321123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307331 (or 307329 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212321123012 its reverse (210321123212), we get a palindrome (422642246224).

The spelling of 212321123012 in words is "two hundred twelve billion, three hundred twenty-one million, one hundred twenty-three thousand, twelve".