212222222000000 has 112 divisors (see below), whose sum is σ = 528476312760360. Its totient is φ = 84888888000000.

The previous prime is 212222221999987. The next prime is 212222222000003. The reversal of 212222222000000 is 222222212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222222000003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 51055556 + ... + 55055555.

Almost surely, 2^{212222222000000} is an apocalyptic number.

212222222000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222222000000 is an abundant number, since it is smaller than the sum of its proper divisors (316254090760360).

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

212222222000000 is an frugal number, since it uses more digits than its factorization.

212222222000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106111155 (or 106111118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 212222222000000 its reverse (222222212), we get a palindrome (212222444222212).

It can be divided in two parts, 212222 and 222000000, that added together give a palindrome (222212222).

The spelling of 212222222000000 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty-two million", and thus it is an aban number.