202122010121 has 16 divisors (see below), whose sum is σ = 205204285440. Its totient is φ = 199062427200.

The previous prime is 202122010117. The next prime is 202122010177. The reversal of 202122010121 is 121010221202.

202122010121 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 202122010121 - 2² = 202122010117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202122010096 and 202122010105.

It is not an unprimeable number, because it can be changed into a prime (202122010421) 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, 35651075 + ... + 35656743.

It is an arithmetic number, because the mean of its divisors is an integer number (12825267840).

Almost surely, 2^202122010121 is an apocalyptic number.

It is an amenable number.

202122010121 is a deficient number, since it is larger than the sum of its proper divisors (3082275319).

202122010121 is a wasteful number, since it uses less digits than its factorization.

202122010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576.

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

Adding to 202122010121 its reverse (121010221202), we get a palindrome (323132231323).

The spelling of 202122010121 in words is "two hundred two billion, one hundred twenty-two million, ten thousand, one hundred twenty-one".