1222220022222 has 16 divisors (see below), whose sum is σ = 2444463038592. Its totient is φ = 407402841720.

The previous prime is 1222220022143. The next prime is 1222220022251. The reversal of 1222220022222 is 2222200222221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223804 + ... + 1579407.

It is an arithmetic number, because the mean of its divisors is an integer number (152778939912).

Almost surely, 2^{1222220022222} is an apocalyptic number.

1222220022222 is an abundant number, since it is smaller than the sum of its proper divisors (1222243016370).

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

1222220022222 is a wasteful number, since it uses less digits than its factorization.

1222220022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916183.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 1222220022222 its reverse (2222200222221), we get a palindrome (3444420244443).

The spelling of 1222220022222 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, twenty-two thousand, two hundred twenty-two".