222220211212212 has 24 divisors (see below), whose sum is σ = 523647626423712. Its totient is φ = 73340003700000.

The previous prime is 222220211212211. The next prime is 222220211212277. The reversal of 222220211212212 is 212212112022222.

It is a happy number.

It is a super-2 number, since 2×222220211212212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220211212211) 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 7 ways as a sum of consecutive naturals, for example, 91675003414 + ... + 91675005837.

It is an arithmetic number, because the mean of its divisors is an integer number (21818651100988).

Almost surely, 2^{222220211212212} is an apocalyptic number.

It is an amenable number.

222220211212212 is an abundant number, since it is smaller than the sum of its proper divisors (301427415211500).

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

222220211212212 is a wasteful number, since it uses less digits than its factorization.

222220211212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183350009359 (or 183350009357 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222220211212212 its reverse (212212112022222), we get a palindrome (434432323234434).

The spelling of 222220211212212 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred eleven million, two hundred twelve thousand, two hundred twelve".