1111212122 has 16 divisors (see below), whose sum is σ = 1677984000. Its totient is φ = 551895552.

The previous prime is 1111212121. The next prime is 1111212203. The reversal of 1111212122 is 2212121111.

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 = 1111212097 and 1111212106.

It is not an unprimeable number, because it can be changed into a prime (1111212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220058 + ... + 225050.

It is an arithmetic number, because the mean of its divisors is an integer number (104874000).

Almost surely, 2^1111212122 is an apocalyptic number.

1111212122 is a deficient number, since it is larger than the sum of its proper divisors (566771878).

1111212122 is a wasteful number, since it uses less digits than its factorization.

1111212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717.

The product of its digits is 16, while the sum is 14.

The square root of 1111212122 is about 33334.8484622324. The cubic root of 1111212122 is about 1035.7755541320.

Adding to 1111212122 its reverse (2212121111), we get a palindrome (3323333233).

The spelling of 1111212122 in words is "one billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-two".