22022012012 has 48 divisors (see below), whose sum is σ = 51744037632. Its totient is φ = 7920002880.

The previous prime is 22022012003. The next prime is 22022012017. The reversal of 22022012012 is 21021022022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (22022012017) 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, 2745998 + ... + 2754005.

It is an arithmetic number, because the mean of its divisors is an integer number (1078000784).

Almost surely, 2^22022012012 is an apocalyptic number.

22022012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22022012012 is an abundant number, since it is smaller than the sum of its proper divisors (29722025620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22022012012 is a wasteful number, since it uses less digits than its factorization.

22022012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500038 (or 5500036 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22022012012 its reverse (21021022022), we get a palindrome (43043034034).

It can be divided in two parts, 220220 and 12012, that added together give a palindrome (232232).

The spelling of 22022012012 in words is "twenty-two billion, twenty-two million, twelve thousand, twelve".