202122110121 has 64 divisors (see below), whose sum is σ = 282338784000. Its totient is φ = 128511360000.

The previous prime is 202122110119. The next prime is 202122110189. The reversal of 202122110121 is 121011221202.

It is not a de Polignac number, because 202122110121 - 2¹ = 202122110119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202122110121.

It is not an unprimeable number, because it can be changed into a prime (202122110191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 751383175 + ... + 751383443.

It is an arithmetic number, because the mean of its divisors is an integer number (4411543500).

Almost surely, 2^202122110121 is an apocalyptic number.

It is an amenable number.

202122110121 is a deficient number, since it is larger than the sum of its proper divisors (80216673879).

202122110121 is a wasteful number, since it uses less digits than its factorization.

202122110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890.

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

Adding to 202122110121 its reverse (121011221202), we get a palindrome (323133331323).

The spelling of 202122110121 in words is "two hundred two billion, one hundred twenty-two million, one hundred ten thousand, one hundred twenty-one".