1000111122212 has 6 divisors (see below), whose sum is σ = 1750194463878. Its totient is φ = 500055561104.

The previous prime is 1000111122211. The next prime is 1000111122403. The reversal of 1000111122212 is 2122211110001.

It can be written as a sum of positive squares in only one way, i.e., 926937626176 + 73173496036 = 962776^2 + 270506^2 .

It is not an unprimeable number, because it can be changed into a prime (1000111122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125013890273 + ... + 125013890280.

It is an arithmetic number, because the mean of its divisors is an integer number (291699077313).

Almost surely, 2^{1000111122212} is an apocalyptic number.

It is an amenable number.

1000111122212 is a deficient number, since it is larger than the sum of its proper divisors (750083341666).

1000111122212 is a wasteful number, since it uses less digits than its factorization.

1000111122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250027780557 (or 250027780555 counting only the distinct ones).

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

Adding to 1000111122212 its reverse (2122211110001), we get a palindrome (3122322232213).

The spelling of 1000111122212 in words is "one trillion, one hundred eleven million, one hundred twenty-two thousand, two hundred twelve".