1212112212112 has 10 divisors (see below), whose sum is σ = 2348467410998. Its totient is φ = 606056106048.

The previous prime is 1212112212097. The next prime is 1212112212127. The reversal of 1212112212112 is 2112122112121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1212112212097) and next prime (1212112212127).

It can be written as a sum of positive squares in only one way, i.e., 1135026021376 + 77086190736 = 1065376^2 + 277644^2 .

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 1212112212112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37878506613 + ... + 37878506644.

Almost surely, 2^{1212112212112} is an apocalyptic number.

It is an amenable number.

1212112212112 is a deficient number, since it is larger than the sum of its proper divisors (1136355198886).

1212112212112 is an equidigital number, since it uses as much as digits as its factorization.

1212112212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75757013265 (or 75757013259 counting only the distinct ones).

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

Adding to 1212112212112 its reverse (2112122112121), we get a palindrome (3324234324233).

Subtracting 1212112212112 from its reverse (2112122112121), we obtain a palindrome (900009900009).

The spelling of 1212112212112 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred twelve thousand, one hundred twelve".