222221012011212 has 192 divisors, whose sum is σ = 541344900096000. Its totient is φ = 70862698368000.

The previous prime is 222221012011109. The next prime is 222221012011217. The reversal of 222221012011212 is 212110210122222.

It is not an unprimeable number, because it can be changed into a prime (222221012011217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46305688789 + ... + 46305693587.

It is an arithmetic number, because the mean of its divisors is an integer number (2819504688000).

Almost surely, 2^{222221012011212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221012011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270672450048000).

222221012011212 is an abundant number, since it is smaller than the sum of its proper divisors (319123888084788).

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

222221012011212 is a wasteful number, since it uses less digits than its factorization.

222221012011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568 (or 7566 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222221012011212 its reverse (212110210122222), we get a palindrome (434331222133434).

The spelling of 222221012011212 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twelve million, eleven thousand, two hundred twelve".