12021022012 has 12 divisors (see below), whose sum is σ = 21044845360. Its totient is φ = 6008209056.

The previous prime is 12021022009. The next prime is 12021022043. The reversal of 12021022012 is 21022012021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12021021983 and 12021022001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563712 + ... + 584647.

Almost surely, 2^12021022012 is an apocalyptic number.

It is an amenable number.

12021022012 is a deficient number, since it is larger than the sum of its proper divisors (9023823348).

12021022012 is a wasteful number, since it uses less digits than its factorization.

12021022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150980 (or 1150978 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12021022012 its reverse (21022012021), we get a palindrome (33043034033).

Subtracting 12021022012 from its reverse (21022012021), we obtain a palindrome (9000990009).

The spelling of 12021022012 in words is "twelve billion, twenty-one million, twenty-two thousand, twelve".