212012112121120 has 48 divisors (see below), whose sum is σ = 506913297024960. Its totient is φ = 83783099724544.

The previous prime is 212012112121097. The next prime is 212012112121133. The reversal of 212012112121120 is 21121211210212.

It is a happy number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7982370460 + ... + 7982397019.

It is an arithmetic number, because the mean of its divisors is an integer number (10560693688020).

Almost surely, 2^{212012112121120} is an apocalyptic number.

212012112121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012112121120 is an abundant number, since it is smaller than the sum of its proper divisors (294901184903840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212012112121120 is a wasteful number, since it uses less digits than its factorization.

212012112121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15964767577 (or 15964767569 counting only the distinct ones).

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

Adding to 212012112121120 its reverse (21121211210212), we get a palindrome (233133323331332).

The spelling of 212012112121120 in words is "two hundred twelve trillion, twelve billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twenty".