222002121222 has 64 divisors (see below), whose sum is σ = 564140428800. Its totient is φ = 63392556960.

The previous prime is 222002121191. The next prime is 222002121227. The reversal of 222002121222 is 222121200222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222002121195 and 222002121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222002121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489429 + ... + 826767.

It is an arithmetic number, because the mean of its divisors is an integer number (8814694200).

Almost surely, 2^222002121222 is an apocalyptic number.

222002121222 is an abundant number, since it is smaller than the sum of its proper divisors (342138307578).

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

222002121222 is a wasteful number, since it uses less digits than its factorization.

222002121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339098 (or 339092 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222002121222 its reverse (222121200222), we get a palindrome (444123321444).

The spelling of 222002121222 in words is "two hundred twenty-two billion, two million, one hundred twenty-one thousand, two hundred twenty-two".