222121122012222 has 8 divisors (see below), whose sum is σ = 444242244024456. Its totient is φ = 74040374004072.

The previous prime is 222121122012157. The next prime is 222121122012259. The reversal of 222121122012222 is 222210221121222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

222121122012222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 222121122012192 and 222121122012201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18510093501013 + ... + 18510093501024.

It is an arithmetic number, because the mean of its divisors is an integer number (55530280503057).

Almost surely, 2^{222121122012222} is an apocalyptic number.

222121122012222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

222121122012222 is a wasteful number, since it uses less digits than its factorization.

222121122012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37020187002042.

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

Adding to 222121122012222 its reverse (222210221121222), we get a palindrome (444331343133444).

The spelling of 222121122012222 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twenty-two million, twelve thousand, two hundred twenty-two".