22221111220000 has 240 divisors, whose sum is σ = 68156597057472. Its totient is φ = 6926060160000.

The previous prime is 22221111219997. The next prime is 22221111220003. The reversal of 22221111220000 is 2211112222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22221111219997) and next prime (22221111220003).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22221111220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5674647 + ... + 8754646.

Almost surely, 2^{22221111220000} is an apocalyptic number.

22221111220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221111220000 is an abundant number, since it is smaller than the sum of its proper divisors (45935485837472).

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

22221111220000 is a wasteful number, since it uses less digits than its factorization.

22221111220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14429341 (or 14429318 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221111220000 its reverse (2211112222), we get a palindrome (22223322332222).

The spelling of 22221111220000 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand".