22110012012 has 72 divisors (see below), whose sum is σ = 56992096000. Its totient is φ = 6666248160.

The previous prime is 22110011971. The next prime is 22110012137. The reversal of 22110012012 is 21021001122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250689 + ... + 327207.

Almost surely, 2^22110012012 is an apocalyptic number.

22110012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22110012012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28496048000).

22110012012 is an abundant number, since it is smaller than the sum of its proper divisors (34882083988).

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

22110012012 is a wasteful number, since it uses less digits than its factorization.

22110012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76747 (or 76734 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22110012012 its reverse (21021001122), we get a palindrome (43131013134).

The spelling of 22110012012 in words is "twenty-two billion, one hundred ten million, twelve thousand, twelve".