222120222220212 has 12 divisors (see below), whose sum is σ = 518280518513856. Its totient is φ = 74040074073400.

The previous prime is 222120222220201. The next prime is 222120222220213. The reversal of 222120222220212 is 212022222021222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120222220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9255009259164 + ... + 9255009259187.

It is an arithmetic number, because the mean of its divisors is an integer number (43190043209488).

Almost surely, 2^{222120222220212} is an apocalyptic number.

It is an amenable number.

222120222220212 is an abundant number, since it is smaller than the sum of its proper divisors (296160296293644).

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

222120222220212 is a wasteful number, since it uses less digits than its factorization.

222120222220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510018518358 (or 18510018518356 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 222120222220212 its reverse (212022222021222), we get a palindrome (434142444241434).

It can be divided in two parts, 22 and 2120222220212, that multiplied together give a palindrome (46644888844664).

The spelling of 222120222220212 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twelve".