12220021012 has 12 divisors (see below), whose sum is σ = 21686234976. Its totient is φ = 6023953880.

The previous prime is 12220021001. The next prime is 12220021061. The reversal of 12220021012 is 21012002221.

It is a happy number.

12220021012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12220020983 and 12220021001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21513838 + ... + 21514405.

It is an arithmetic number, because the mean of its divisors is an integer number (1807186248).

Almost surely, 2^12220021012 is an apocalyptic number.

It is an amenable number.

12220021012 is a deficient number, since it is larger than the sum of its proper divisors (9466213964).

12220021012 is a wasteful number, since it uses less digits than its factorization.

12220021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43028318 (or 43028316 counting only the distinct ones).

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

Adding to 12220021012 its reverse (21012002221), we get a palindrome (33232023233).

The spelling of 12220021012 in words is "twelve billion, two hundred twenty million, twenty-one thousand, twelve".