1212222120122 has 16 divisors (see below), whose sum is σ = 1995152229000. Its totient is φ = 548930770752.

The previous prime is 1212222120119. The next prime is 1212222120139. The reversal of 1212222120122 is 2210212222121.

It can be written as a sum of positive squares in 4 ways, for example, as 922174169401 + 290047950721 = 960299^2 + 538561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212222120094 and 1212222120103.

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, 439846997 + ... + 439849752.

Almost surely, 2^{1212222120122} is an apocalyptic number.

1212222120122 is a deficient number, since it is larger than the sum of its proper divisors (782930108878).

1212222120122 is a wasteful number, since it uses less digits than its factorization.

1212222120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879696817.

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

Adding to 1212222120122 its reverse (2210212222121), we get a palindrome (3422434342243).

The spelling of 1212222120122 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twenty-two".