202120012121 has 8 divisors (see below), whose sum is σ = 209104704000. Its totient is φ = 195164363520.

The previous prime is 202120012117. The next prime is 202120012219. The reversal of 202120012121 is 121210021202.

202120012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202120012121 - 2² = 202120012117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202120012096 and 202120012105.

It is not an unprimeable number, because it can be changed into a prime (202120042121) 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 7 ways as a sum of consecutive naturals, for example, 7246661 + ... + 7274498.

It is an arithmetic number, because the mean of its divisors is an integer number (26138088000).

Almost surely, 2^202120012121 is an apocalyptic number.

It is an amenable number.

202120012121 is a deficient number, since it is larger than the sum of its proper divisors (6984691879).

202120012121 is a wasteful number, since it uses less digits than its factorization.

202120012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14521639.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202120012121 its reverse (121210021202), we get a palindrome (323330033323).

The spelling of 202120012121 in words is "two hundred two billion, one hundred twenty million, twelve thousand, one hundred twenty-one".