1222120021222 has 4 divisors (see below), whose sum is σ = 1833180031836. Its totient is φ = 611060010610.

The previous prime is 1222120021147. The next prime is 1222120021223. The reversal of 1222120021222 is 2221200212221.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1222120021222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222120021223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305530005304 + ... + 305530005307.

It is an arithmetic number, because the mean of its divisors is an integer number (458295007959).

Almost surely, 2^{1222120021222} is an apocalyptic number.

1222120021222 is a deficient number, since it is larger than the sum of its proper divisors (611060010614).

1222120021222 is an equidigital number, since it uses as much as digits as its factorization.

1222120021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611060010613.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1222120021222 its reverse (2221200212221), we get a palindrome (3443320233443).

The spelling of 1222120021222 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, twenty-one thousand, two hundred twenty-two".