212222000000 has 224 divisors, whose sum is σ = 546848469000. Its totient is φ = 81939200000.

The previous prime is 212221999961. The next prime is 212222000033. The reversal of 212222000000 is 222212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 57998171 + ... + 58001829.

Almost surely, 2^212222000000 is an apocalyptic number.

212222000000 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 212222000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273424234500).

212222000000 is an abundant number, since it is smaller than the sum of its proper divisors (334626469000).

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

212222000000 is an frugal number, since it uses more digits than its factorization.

212222000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 212222000000 its reverse (222212), we get a palindrome (212222222212).

The spelling of 212222000000 in words is "two hundred twelve billion, two hundred twenty-two million", and thus it is an aban number.