211121212212112 has 20 divisors (see below), whose sum is σ = 419024113263756. Its totient is φ = 102985957176320.

The previous prime is 211121212212089. The next prime is 211121212212139. The reversal of 211121212212112 is 211212212121112.

It can be written as a sum of positive squares in 2 ways, for example, as 67494505974016 + 143626706238096 = 8215504^2 + 11984436^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160915557433 + ... + 160915558744.

Almost surely, 2^{211121212212112} is an apocalyptic number.

It is an amenable number.

211121212212112 is a deficient number, since it is larger than the sum of its proper divisors (207902901051644).

211121212212112 is a wasteful number, since it uses less digits than its factorization.

211121212212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321831116226 (or 321831116220 counting only the distinct ones).

The product of its digits is 128, while the sum is 22.

Adding to 211121212212112 its reverse (211212212121112), we get a palindrome (422333424333224).

The spelling of 211121212212112 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred twelve".