1112121122212 has 6 divisors (see below), whose sum is σ = 1946211963878. Its totient is φ = 556060561104.

The previous prime is 1112121122191. The next prime is 1112121122213. The reversal of 1112121122212 is 2122211212111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 737547745636 + 374573376576 = 858806^2 + 612024^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1112121122212.

It is not an unprimeable number, because it can be changed into a prime (1112121122213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139015140273 + ... + 139015140280.

Almost surely, 2^{1112121122212} is an apocalyptic number.

It is an amenable number.

1112121122212 is a deficient number, since it is larger than the sum of its proper divisors (834090841666).

1112121122212 is a wasteful number, since it uses less digits than its factorization.

1112121122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278030280557 (or 278030280555 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 1112121122212 its reverse (2122211212111), we get a palindrome (3234332334323).

The spelling of 1112121122212 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".