2121012122120 has 64 divisors (see below), whose sum is σ = 4776749280000. Its totient is φ = 847610270208.

The previous prime is 2121012122093. The next prime is 2121012122129. The reversal of 2121012122120 is 212212101212.

It is not an unprimeable number, because it can be changed into a prime (2121012122129) 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 in 15 ways as a sum of consecutive naturals, for example, 234387356 + ... + 234396404.

It is an arithmetic number, because the mean of its divisors is an integer number (74636707500).

Almost surely, 2^{2121012122120} is an apocalyptic number.

2121012122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121012122120 is an abundant number, since it is smaller than the sum of its proper divisors (2655737157880).

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

2121012122120 is a wasteful number, since it uses less digits than its factorization.

2121012122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902 (or 13898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121012122120 its reverse (212212101212), we get a palindrome (2333224223332).

The spelling of 2121012122120 in words is "two trillion, one hundred twenty-one billion, twelve million, one hundred twenty-two thousand, one hundred twenty".