202010222121 has 16 divisors (see below), whose sum is σ = 276696323904. Its totient is φ = 131000635584.

The previous prime is 202010222111. The next prime is 202010222143. The reversal of 202010222121 is 121222010202.

It is not a de Polignac number, because 202010222121 - 2¹¹ = 202010220073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202010222121.

It is not an unprimeable number, because it can be changed into a prime (202010222111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217015 + ... + 671651.

It is an arithmetic number, because the mean of its divisors is an integer number (17293520244).

Almost surely, 2^202010222121 is an apocalyptic number.

It is an amenable number.

202010222121 is a deficient number, since it is larger than the sum of its proper divisors (74686101783).

202010222121 is a wasteful number, since it uses less digits than its factorization.

202010222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458680.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202010222121 its reverse (121222010202), we get a palindrome (323232232323).

The spelling of 202010222121 in words is "two hundred two billion, ten million, two hundred twenty-two thousand, one hundred twenty-one".