22002222111012 has 216 divisors, whose sum is σ = 65942433785592. Its totient is φ = 6144418114560.

The previous prime is 22002222110963. The next prime is 22002222111047. The reversal of 22002222111012 is 21011122220022.

It is a happy number.

22002222111012 is a `hidden beast` number, since 220 + 0 + 222 + 211 + 1 + 0 + 12 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4442719666176 + 17559502444836 = 2107776^2 + 4190406^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 34396048 + ... + 35029880.

Almost surely, 2^{22002222111012} is an apocalyptic number.

22002222111012 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 22002222111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32971216892796).

22002222111012 is an abundant number, since it is smaller than the sum of its proper divisors (43940211674580).

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

22002222111012 is a wasteful number, since it uses less digits than its factorization.

22002222111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634491 (or 634475 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22002222111012 its reverse (21011122220022), we get a palindrome (43013344331034).

The spelling of 22002222111012 in words is "twenty-two trillion, two billion, two hundred twenty-two million, one hundred eleven thousand, twelve".