1212222111122 has 16 divisors (see below), whose sum is σ = 1983660505632. Its totient is φ = 551003293920.

The previous prime is 1212222111091. The next prime is 1212222111127. The reversal of 1212222111122 is 2211112222121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1212222111094 and 1212222111103.

It is not an unprimeable number, because it can be changed into a prime (1212222111127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1796813 + ... + 2377599.

It is an arithmetic number, because the mean of its divisors is an integer number (123978781602).

Almost surely, 2^{1212222111122} is an apocalyptic number.

1212222111122 is a deficient number, since it is larger than the sum of its proper divisors (771438394510).

1212222111122 is a wasteful number, since it uses less digits than its factorization.

1212222111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675673.

The product of its digits is 128, while the sum is 20.

Adding to 1212222111122 its reverse (2211112222121), we get a palindrome (3423334333243).

The spelling of 1212222111122 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twenty-two".