212020031121 has 16 divisors (see below), whose sum is σ = 284930352000. Its totient is φ = 140230464128.

The previous prime is 212020031117. The next prime is 212020031123. The reversal of 212020031121 is 121130020212.

212020031121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212020031121 - 2² = 212020031117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212020031121.

It is not an unprimeable number, because it can be changed into a prime (212020031123) 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, 92365 + ... + 657701.

It is an arithmetic number, because the mean of its divisors is an integer number (17808147000).

Almost surely, 2^212020031121 is an apocalyptic number.

It is an amenable number.

212020031121 is a deficient number, since it is larger than the sum of its proper divisors (72910320879).

212020031121 is a wasteful number, since it uses less digits than its factorization.

212020031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566328.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212020031121 its reverse (121130020212), we get a palindrome (333150051333).

The spelling of 212020031121 in words is "two hundred twelve billion, twenty million, thirty-one thousand, one hundred twenty-one".