2211212000000 has 504 divisors, whose sum is σ = 5751071697840. Its totient is φ = 847872000000.

The previous prime is 2211211999981. The next prime is 2211212000009. The reversal of 2211212000000 is 2121122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2211212000009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 15907999931 + ... + 15908000069.

Almost surely, 2^{2211212000000} is an apocalyptic number.

2211212000000 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 2211212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2875535848920).

2211212000000 is an abundant number, since it is smaller than the sum of its proper divisors (3539859697840).

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

2211212000000 is an frugal number, since it uses more digits than its factorization.

2211212000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2211212000000 its reverse (2121122), we get a palindrome (2211214121122).

The spelling of 2211212000000 in words is "two trillion, two hundred eleven billion, two hundred twelve million", and thus it is an aban number.