22112212220000 has 240 divisors, whose sum is σ = 62181172180512. Its totient is φ = 7580052480000.

The previous prime is 22112212219961. The next prime is 22112212220009. The reversal of 22112212220000 is 2221221122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112212220009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1250611160 + ... + 1250628840.

Almost surely, 2^{22112212220000} is an apocalyptic number.

22112212220000 is a gapful number since it is divisible by the number (20) 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 22112212220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31090586090256).

22112212220000 is an abundant number, since it is smaller than the sum of its proper divisors (40068959960512).

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

22112212220000 is an equidigital number, since it uses as much as digits as its factorization.

22112212220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26651 (or 26628 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22112212220000 its reverse (2221221122), we get a palindrome (22114433441122).

The spelling of 22112212220000 in words is "twenty-two trillion, one hundred twelve billion, two hundred twelve million, two hundred twenty thousand".