2112121211212 has 6 divisors (see below), whose sum is σ = 3696212119628. Its totient is φ = 1056060605604.

The previous prime is 2112121211209. The next prime is 2112121211219. The reversal of 2112121211212 is 2121121212112.

It is a happy number.

It is a super-2 number, since 2×2112121211212² (a number of 25 digits) contains 22 as substring.

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 2112121211212.

It is not an unprimeable number, because it can be changed into a prime (2112121211219) 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, 264015151398 + ... + 264015151405.

Almost surely, 2^{2112121211212} is an apocalyptic number.

It is an amenable number.

2112121211212 is a deficient number, since it is larger than the sum of its proper divisors (1584090908416).

2112121211212 is a wasteful number, since it uses less digits than its factorization.

2112121211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528030302807 (or 528030302805 counting only the distinct ones).

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

Adding to 2112121211212 its reverse (2121121212112), we get a palindrome (4233242423324).

The spelling of 2112121211212 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".