212021201121 has 16 divisors (see below), whose sum is σ = 290362935744. Its totient is φ = 137514193344.

The previous prime is 212021201099. The next prime is 212021201173. The reversal of 212021201121 is 121102120212.

212021201121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212021201121 - 2⁶ = 212021201057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212021201121.

It is not an unprimeable number, because it can be changed into a prime (212021101121) 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, 1159470 + ... + 1329816.

It is an arithmetic number, because the mean of its divisors is an integer number (18147683484).

Almost surely, 2^212021201121 is an apocalyptic number.

It is an amenable number.

212021201121 is a deficient number, since it is larger than the sum of its proper divisors (78341734623).

212021201121 is a wasteful number, since it uses less digits than its factorization.

212021201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181600.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212021201121 its reverse (121102120212), we get a palindrome (333123321333).

The spelling of 212021201121 in words is "two hundred twelve billion, twenty-one million, two hundred one thousand, one hundred twenty-one".