121112221212212 has 12 divisors (see below), whose sum is σ = 217115811197796. Its totient is φ = 59079132298560.

The previous prime is 121112221212181. The next prime is 121112221212287. The reversal of 121112221212212 is 212212122211121.

It can be written as a sum of positive squares in 2 ways, for example, as 28080100472356 + 93032120739856 = 5299066^2 + 9645316^2 .

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

It is a congruent number.

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, 369244576703 + ... + 369244577030.

It is an arithmetic number, because the mean of its divisors is an integer number (18092984266483).

Almost surely, 2^{121112221212212} is an apocalyptic number.

It is an amenable number.

121112221212212 is a deficient number, since it is larger than the sum of its proper divisors (96003589985584).

121112221212212 is a wasteful number, since it uses less digits than its factorization.

121112221212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738489153778 (or 738489153776 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 121112221212212 its reverse (212212122211121), we get a palindrome (333324343423333).

The spelling of 121112221212212 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twelve".