1212221120222 has 8 divisors (see below), whose sum is σ = 2078093348976. Its totient is φ = 519523337232.

The previous prime is 1212221120203. The next prime is 1212221120251. The reversal of 1212221120222 is 2220211222121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212221120194 and 1212221120203.

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, 43293611423 + ... + 43293611450.

It is an arithmetic number, because the mean of its divisors is an integer number (259761668622).

Almost surely, 2^{1212221120222} is an apocalyptic number.

1212221120222 is a deficient number, since it is larger than the sum of its proper divisors (865872228754).

1212221120222 is an equidigital number, since it uses as much as digits as its factorization.

1212221120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86587222882.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1212221120222 its reverse (2220211222121), we get a palindrome (3432432342343).

The spelling of 1212221120222 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-two".