12022551812 has 48 divisors (see below), whose sum is σ = 22883008512. Its totient is φ = 5510276640.

The previous prime is 12022551809. The next prime is 12022551817. The reversal of 12022551812 is 21815522021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12022551817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273293 + ... + 314219.

It is an arithmetic number, because the mean of its divisors is an integer number (476729344).

Almost surely, 2^12022551812 is an apocalyptic number.

It is an amenable number.

12022551812 is a deficient number, since it is larger than the sum of its proper divisors (10860456700).

12022551812 is a wasteful number, since it uses less digits than its factorization.

12022551812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41088 (or 41086 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The spelling of 12022551812 in words is "twelve billion, twenty-two million, five hundred fifty-one thousand, eight hundred twelve".