1222021220122 has 8 divisors (see below), whose sum is σ = 1858141855476. Its totient is φ = 602640601632.

The previous prime is 1222021220117. The next prime is 1222021220141. The reversal of 1222021220122 is 2210221202221.

It can be written as a sum of positive squares in 2 ways, for example, as 1216055357001 + 5965863121 = 1102749^2 + 77239^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1222021220122.

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, 4185004033 + ... + 4185004324.

Almost surely, 2^{1222021220122} is an apocalyptic number.

1222021220122 is a deficient number, since it is larger than the sum of its proper divisors (636120635354).

1222021220122 is an equidigital number, since it uses as much as digits as its factorization.

1222021220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8370008432.

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

Adding to 1222021220122 its reverse (2210221202221), we get a palindrome (3432242422343).

The spelling of 1222021220122 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".